38744890 has 16 divisors (see below), whose sum is σ = 69953832. Its totient is φ = 15450624.

The previous prime is 38744869. The next prime is 38744929. The reversal of 38744890 is 9844783.

It can be written as a sum of positive squares in 4 ways, for example, as 28740321 + 10004569 = 5361^2 + 3163^2 .

It is a super-2 number, since 2×38744890² = 3002333002224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2379 + ... + 9118.

Almost surely, 2^38744890 is an apocalyptic number.

38744890 is a deficient number, since it is larger than the sum of its proper divisors (31208942).

38744890 is a wasteful number, since it uses less digits than its factorization.

38744890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11841.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 38744890 is about 6224.5393403850. The cubic root of 38744890 is about 338.3800971273.

The spelling of 38744890 in words is "thirty-eight million, seven hundred forty-four thousand, eight hundred ninety".