86087520 has 144 divisors (see below), whose sum is σ = 296255232. Its totient is φ = 22763520.

The previous prime is 86087497. The next prime is 86087539. The reversal of 86087520 is 2578068.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×86087520² = 14822122199500800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274884 + ... + 275196.

It is an arithmetic number, because the mean of its divisors is an integer number (2057328).

Almost surely, 2^86087520 is an apocalyptic number.

86087520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86087520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148127616).

86087520 is an abundant number, since it is smaller than the sum of its proper divisors (210167712).

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

86087520 is a wasteful number, since it uses less digits than its factorization.

86087520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 86087520 is about 9278.3360577207. The cubic root of 86087520 is about 441.5501794772.

Subtracting from 86087520 its product of nonzero digits (26880), we obtain a triangular number (86060640 = T₁₃₁₁₉).

The spelling of 86087520 in words is "eighty-six million, eighty-seven thousand, five hundred twenty".