87024540 has 48 divisors (see below), whose sum is σ = 244137600. Its totient is φ = 23161920.

The previous prime is 87024473. The next prime is 87024593. The reversal of 87024540 is 4542078.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 87024498 and 87024507.

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, 40411 + ... + 42509.

It is an arithmetic number, because the mean of its divisors is an integer number (5086200).

Almost surely, 2^87024540 is an apocalyptic number.

It is an amenable number.

87024540 is an abundant number, since it is smaller than the sum of its proper divisors (157113060).

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

87024540 is a wasteful number, since it uses less digits than its factorization.

87024540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802 (or 2800 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 87024540 is about 9328.6944424180. The cubic root of 87024540 is about 443.1464202867.

The spelling of 87024540 in words is "eighty-seven million, twenty-four thousand, five hundred forty".