87638422 has 8 divisors (see below), whose sum is σ = 135010656. Its totient is φ = 42634872.

The previous prime is 87638399. The next prime is 87638449. The reversal of 87638422 is 22483678.

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

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, 592078 + ... + 592225.

It is an arithmetic number, because the mean of its divisors is an integer number (16876332).

Almost surely, 2^87638422 is an apocalyptic number.

87638422 is a deficient number, since it is larger than the sum of its proper divisors (47372234).

87638422 is a wasteful number, since it uses less digits than its factorization.

87638422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184342.

The product of its digits is 129024, while the sum is 40.

The square root of 87638422 is about 9361.5395101447. The cubic root of 87638422 is about 444.1859831454.

The spelling of 87638422 in words is "eighty-seven million, six hundred thirty-eight thousand, four hundred twenty-two".