87042768 has 20 divisors (see below), whose sum is σ = 224860608. Its totient is φ = 29014240.

The previous prime is 87042763. The next prime is 87042797. The reversal of 87042768 is 86724078.

It is a super-2 number, since 2×87042768² = 15152886922203648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87042763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906648 + ... + 906743.

Almost surely, 2^87042768 is an apocalyptic number.

It is an amenable number.

87042768 is an abundant number, since it is smaller than the sum of its proper divisors (137817840).

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

87042768 is a wasteful number, since it uses less digits than its factorization.

87042768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813402 (or 1813396 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 87042768 is about 9329.6713768492. The cubic root of 87042768 is about 443.1773583380.

The spelling of 87042768 in words is "eighty-seven million, forty-two thousand, seven hundred sixty-eight".