87403144 has 32 divisors (see below), whose sum is σ = 168537600. Its totient is φ = 42468480.

The previous prime is 87403109. The next prime is 87403157. The reversal of 87403144 is 44130478.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143689 + ... + 144295.

It is an arithmetic number, because the mean of its divisors is an integer number (5266800).

Almost surely, 2^87403144 is an apocalyptic number.

It is an amenable number.

87403144 is a deficient number, since it is larger than the sum of its proper divisors (81134456).

87403144 is a wasteful number, since it uses less digits than its factorization.

87403144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093 (or 1089 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 87403144 is about 9348.9648624861. The cubic root of 87403144 is about 443.7881330980.

The spelling of 87403144 in words is "eighty-seven million, four hundred three thousand, one hundred forty-four".