38645344 has 48 divisors (see below), whose sum is σ = 79349760. Its totient is φ = 18506880.

The previous prime is 38645333. The next prime is 38645351. The reversal of 38645344 is 44354683.

It is a super-2 number, since 2×38645344² = 2986925225756672, 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 7 ways as a sum of consecutive naturals, for example, 161577 + ... + 161815.

It is an arithmetic number, because the mean of its divisors is an integer number (1653120).

Almost surely, 2^38645344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38645344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39674880).

38645344 is an abundant number, since it is smaller than the sum of its proper divisors (40704416).

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

38645344 is a wasteful number, since it uses less digits than its factorization.

38645344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 435 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 38645344 is about 6216.5379432607. The cubic root of 38645344 is about 338.0900522167.

The spelling of 38645344 in words is "thirty-eight million, six hundred forty-five thousand, three hundred forty-four".