87776140 has 24 divisors (see below), whose sum is σ = 185965920. Its totient is φ = 34798848.

The previous prime is 87776113. The next prime is 87776147. The reversal of 87776140 is 4167778.

It is a junction number, because it is equal to n+sod(n) for n = 87776093 and 87776102.

It is not an unprimeable number, because it can be changed into a prime (87776147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17160 + ... + 21679.

It is an arithmetic number, because the mean of its divisors is an integer number (7748580).

Almost surely, 2^87776140 is an apocalyptic number.

It is an amenable number.

87776140 is an abundant number, since it is smaller than the sum of its proper divisors (98189780).

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

87776140 is a wasteful number, since it uses less digits than its factorization.

87776140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38961 (or 38959 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 87776140 is about 9368.8921436849. The cubic root of 87776140 is about 444.4185310354.

The spelling of 87776140 in words is "eighty-seven million, seven hundred seventy-six thousand, one hundred forty".