87768628 has 12 divisors (see below), whose sum is σ = 153703872. Its totient is φ = 43853240.

The previous prime is 87768613. The next prime is 87768647. The reversal of 87768628 is 82686778.

It is a super-2 number, since 2×87768628² = 15406664122004768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700 + ... + 13267.

It is an arithmetic number, because the mean of its divisors is an integer number (12808656).

Almost surely, 2^87768628 is an apocalyptic number.

It is an amenable number.

87768628 is a deficient number, since it is larger than the sum of its proper divisors (65935244).

87768628 is a wasteful number, since it uses less digits than its factorization.

87768628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15542 (or 15540 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The square root of 87768628 is about 9368.4912339181. The cubic root of 87768628 is about 444.4058526954.

The spelling of 87768628 in words is "eighty-seven million, seven hundred sixty-eight thousand, six hundred twenty-eight".