38121836 has 6 divisors (see below), whose sum is σ = 66713220. Its totient is φ = 19060916.

The previous prime is 38121823. The next prime is 38121883. The reversal of 38121836 is 63812183.

It is a happy number.

It is a super-3 number, since 3×38121836³ (a number of 24 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4765226 + ... + 4765233.

It is an arithmetic number, because the mean of its divisors is an integer number (11118870).

Almost surely, 2^38121836 is an apocalyptic number.

It is an amenable number.

38121836 is a deficient number, since it is larger than the sum of its proper divisors (28591384).

38121836 is a wasteful number, since it uses less digits than its factorization.

38121836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9530463 (or 9530461 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 38121836 is about 6174.2882990674. The cubic root of 38121836 is about 336.5564640561.

The spelling of 38121836 in words is "thirty-eight million, one hundred twenty-one thousand, eight hundred thirty-six".