87405528 has 64 divisors (see below), whose sum is σ = 253186560. Its totient is φ = 24627456.

The previous prime is 87405499. The next prime is 87405547. The reversal of 87405528 is 82550478.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8701 + ... + 15827.

It is an arithmetic number, because the mean of its divisors is an integer number (3956040).

Almost surely, 2^87405528 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 87405528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126593280).

87405528 is an abundant number, since it is smaller than the sum of its proper divisors (165781032).

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

87405528 is a wasteful number, since it uses less digits than its factorization.

87405528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7216 (or 7212 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 87405528 is about 9349.0923623633. The cubic root of 87405528 is about 443.7921679693.

The spelling of 87405528 in words is "eighty-seven million, four hundred five thousand, five hundred twenty-eight".