38657212 has 12 divisors (see below), whose sum is σ = 73800216. Its totient is φ = 17571440.

The previous prime is 38657209. The next prime is 38657231. The reversal of 38657212 is 21275683.

It is a happy number.

It is a super-2 number, since 2×38657212² = 2988760079225888, which contains 22 as substring.

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, 439243 + ... + 439330.

It is an arithmetic number, because the mean of its divisors is an integer number (6150018).

Almost surely, 2^38657212 is an apocalyptic number.

It is an amenable number.

38657212 is a deficient number, since it is larger than the sum of its proper divisors (35143004).

38657212 is a wasteful number, since it uses less digits than its factorization.

38657212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878588 (or 878586 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 38657212 is about 6217.4924205824. The cubic root of 38657212 is about 338.1246578695.

The spelling of 38657212 in words is "thirty-eight million, six hundred fifty-seven thousand, two hundred twelve".