37221642 has 24 divisors (see below), whose sum is σ = 81119844. Its totient is φ = 12334464.

The previous prime is 37221637. The next prime is 37221661. The reversal of 37221642 is 24612273.

It can be written as a sum of positive squares in 2 ways, for example, as 29387241 + 7834401 = 5421^2 + 2799^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2863 + ... + 9090.

Almost surely, 2^37221642 is an apocalyptic number.

37221642 is an abundant number, since it is smaller than the sum of its proper divisors (43898202).

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

37221642 is a wasteful number, since it uses less digits than its factorization.

37221642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12134 (or 12131 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 37221642 is about 6100.9541876661. The cubic root of 37221642 is about 333.8862306289.

The spelling of 37221642 in words is "thirty-seven million, two hundred twenty-one thousand, six hundred forty-two".