87402870 has 24 divisors (see below), whose sum is σ = 227247696. Its totient is φ = 23307408.

The previous prime is 87402851. The next prime is 87402871. The reversal of 87402870 is 7820478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87402871) 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, 485482 + ... + 485661.

It is an arithmetic number, because the mean of its divisors is an integer number (9468654).

Almost surely, 2^87402870 is an apocalyptic number.

87402870 is an abundant number, since it is smaller than the sum of its proper divisors (139844826).

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

87402870 is a wasteful number, since it uses less digits than its factorization.

87402870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971156 (or 971153 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 87402870 is about 9348.9502084459. The cubic root of 87402870 is about 443.7876693539.

The spelling of 87402870 in words is "eighty-seven million, four hundred two thousand, eight hundred seventy".