87328540 has 24 divisors (see below), whose sum is σ = 197497440. Its totient is φ = 32244288.

The previous prime is 87328531. The next prime is 87328559. The reversal of 87328540 is 4582378.

It is a self number, because there is not a number n which added to its sum of digits gives 87328540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167680 + ... + 168199.

It is an arithmetic number, because the mean of its divisors is an integer number (8229060).

Almost surely, 2^87328540 is an apocalyptic number.

It is an amenable number.

87328540 is an abundant number, since it is smaller than the sum of its proper divisors (110168900).

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

87328540 is a wasteful number, since it uses less digits than its factorization.

87328540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335901 (or 335899 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 87328540 is about 9344.9740502582. The cubic root of 87328540 is about 443.6618302640.

The spelling of 87328540 in words is "eighty-seven million, three hundred twenty-eight thousand, five hundred forty".