87390722 has 8 divisors (see below), whose sum is σ = 131139216. Its totient is φ = 43677652.

The previous prime is 87390701. The next prime is 87390757. The reversal of 87390722 is 22709378.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1448 + ... + 13299.

It is an arithmetic number, because the mean of its divisors is an integer number (16392402).

Almost surely, 2^87390722 is an apocalyptic number.

87390722 is a deficient number, since it is larger than the sum of its proper divisors (43748494).

87390722 is a wasteful number, since it uses less digits than its factorization.

87390722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17712.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 87390722 is about 9348.3004872544. The cubic root of 87390722 is about 443.7671079300.

The spelling of 87390722 in words is "eighty-seven million, three hundred ninety thousand, seven hundred twenty-two".