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87401268 = 223797103
BaseRepresentation
bin1010011010110…
…10001100110100
320002110110000000
411031122030310
5134333320033
612401151300
72110620123
oct515321464
9202413000
1087401268
1145376959
122532b530
1315152136
14b871aba
157a16a13
hex535a334

87401268 has 96 divisors (see below), whose sum is σ = 234008320. Its totient is φ = 28553472.

The previous prime is 87401261. The next prime is 87401269. The reversal of 87401268 is 86210478.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87401261) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 848505 + ... + 848607.

Almost surely, 287401268 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 87401268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117004160).

87401268 is an abundant number, since it is smaller than the sum of its proper divisors (146607052).

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

87401268 is a wasteful number, since it uses less digits than its factorization.

87401268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 87401268 is about 9348.8645299844. The cubic root of 87401268 is about 443.7849579548.

The spelling of 87401268 in words is "eighty-seven million, four hundred one thousand, two hundred sixty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 97 103 108 162 194 206 243 291 309 324 388 412 486 582 618 729 873 927 972 1164 1236 1458 1746 1854 2187 2619 2781 2916 3492 3708 4374 5238 5562 7857 8343 8748 9991 10476 11124 15714 16686 19982 23571 25029 29973 31428 33372 39964 47142 50058 59946 70713 75087 89919 94284 100116 119892 141426 150174 179838 212139 225261 269757 282852 300348 359676 424278 450522 539514 809271 848556 901044 1079028 1618542 2427813 3237084 4855626 7283439 9711252 14566878 21850317 29133756 43700634 87401268