87972422 has 8 divisors (see below), whose sum is σ = 134195400. Its totient is φ = 43240624.

The previous prime is 87972397. The next prime is 87972463. The reversal of 87972422 is 22427978.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87972422.

It is a congruent number.

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, 372647 + ... + 372882.

It is an arithmetic number, because the mean of its divisors is an integer number (16774425).

Almost surely, 2^87972422 is an apocalyptic number.

87972422 is a deficient number, since it is larger than the sum of its proper divisors (46222978).

87972422 is a wasteful number, since it uses less digits than its factorization.

87972422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745590.

The product of its digits is 112896, while the sum is 41.

The square root of 87972422 is about 9379.3614921273. The cubic root of 87972422 is about 444.7495489237.

The spelling of 87972422 in words is "eighty-seven million, nine hundred seventy-two thousand, four hundred twenty-two".