87876540 has 36 divisors (see below), whose sum is σ = 266559384. Its totient is φ = 23433696.

The previous prime is 87876533. The next prime is 87876541. The reversal of 87876540 is 4567878.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87876541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243922 + ... + 244281.

Almost surely, 2^87876540 is an apocalyptic number.

It is an amenable number.

87876540 is an abundant number, since it is smaller than the sum of its proper divisors (178682844).

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

87876540 is a wasteful number, since it uses less digits than its factorization.

87876540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488218 (or 488213 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 87876540 is about 9374.2487699015. The cubic root of 87876540 is about 444.5879112302.

The spelling of 87876540 in words is "eighty-seven million, eight hundred seventy-six thousand, five hundred forty".