38109312 has 64 divisors (see below), whose sum is σ = 112485600. Its totient is φ = 12701952.

The previous prime is 38109301. The next prime is 38109319. The reversal of 38109312 is 21390183.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×38109312² = 2904639322226688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (38109319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058 + ... + 8969.

Almost surely, 2^38109312 is an apocalyptic number.

38109312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38109312 is an abundant number, since it is smaller than the sum of its proper divisors (74376288).

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

38109312 is a wasteful number, since it uses less digits than its factorization.

38109312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11050 (or 11032 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 38109312 is about 6173.2740097942. The cubic root of 38109312 is about 336.5196042117.

Adding to 38109312 its reverse (21390183), we get a palindrome (59499495).

The spelling of 38109312 in words is "thirty-eight million, one hundred nine thousand, three hundred twelve".