38612890 has 8 divisors (see below), whose sum is σ = 69503220. Its totient is φ = 15445152.

The previous prime is 38612869. The next prime is 38612947. The reversal of 38612890 is 9821683.

It can be written as a sum of positive squares in 2 ways, for example, as 34845409 + 3767481 = 5903^2 + 1941^2 .

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, 1930635 + ... + 1930654.

Almost surely, 2^38612890 is an apocalyptic number.

38612890 is a deficient number, since it is larger than the sum of its proper divisors (30890330).

38612890 is a wasteful number, since it uses less digits than its factorization.

38612890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861296.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 38612890 is about 6213.9270996689. The cubic root of 38612890 is about 337.9953840855.

The spelling of 38612890 in words is "thirty-eight million, six hundred twelve thousand, eight hundred ninety".