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87258336 = 25311194349
BaseRepresentation
bin1010011001101…
…11010011100000
320002012011221020
411030313103200
5134314231321
612354125440
72106453324
oct514672340
9202164836
1087258336
1145289530
1225280880
1315102069
14b835984
1579d94c6
hex53374e0

87258336 has 96 divisors (see below), whose sum is σ = 263088000. Its totient is φ = 25044480.

The previous prime is 87258329. The next prime is 87258401. The reversal of 87258336 is 63385278.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×872583362 = 15228034402977792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17890 + ... + 22238.

It is an arithmetic number, because the mean of its divisors is an integer number (2740500).

Almost surely, 287258336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87258336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131544000).

87258336 is an abundant number, since it is smaller than the sum of its proper divisors (175829664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87258336 is a wasteful number, since it uses less digits than its factorization.

87258336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392 (or 4384 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 87258336 is about 9341.2170513269. The cubic root of 87258336 is about 443.5429108163.

The spelling of 87258336 in words is "eighty-seven million, two hundred fifty-eight thousand, three hundred thirty-six".

Divisors: 1 2 3 4 6 8 11 12 16 19 22 24 32 33 38 44 48 57 66 76 88 96 114 132 152 176 209 228 264 304 352 418 456 528 608 627 836 912 1056 1254 1672 1824 2508 3344 4349 5016 6688 8698 10032 13047 17396 20064 26094 34792 47839 52188 69584 82631 95678 104376 139168 143517 165262 191356 208752 247893 287034 330524 382712 417504 495786 574068 661048 765424 908941 991572 1148136 1322096 1530848 1817882 1983144 2296272 2644192 2726823 3635764 3966288 4592544 5453646 7271528 7932576 10907292 14543056 21814584 29086112 43629168 87258336