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87284501 = 1072812903
BaseRepresentation
bin1010011001111…
…01101100010101
320002020111211022
411030331230111
5134321101001
612354450525
72106622523
oct514755425
9202214738
1087284501
11452a7157
1225293a45
1315110c45
14b841313
1579e211b
hex533db15

87284501 has 8 divisors (see below), whose sum is σ = 88444224. Its totient is φ = 86131360.

The previous prime is 87284479. The next prime is 87284507. The reversal of 87284501 is 10548278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87284501 - 214 = 87268117 is a prime.

It is a super-2 number, since 2×872845012 = 15237168229638002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87284507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28616 + ... + 31518.

It is an arithmetic number, because the mean of its divisors is an integer number (11055528).

Almost surely, 287284501 is an apocalyptic number.

It is an amenable number.

87284501 is a deficient number, since it is larger than the sum of its proper divisors (1159723).

87284501 is a wasteful number, since it uses less digits than its factorization.

87284501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 87284501 is about 9342.6174597914. The cubic root of 87284501 is about 443.5872394960.

The spelling of 87284501 in words is "eighty-seven million, two hundred eighty-four thousand, five hundred one".

Divisors: 1 107 281 2903 30067 310621 815743 87284501