38445072 has 40 divisors (see below), whose sum is σ = 102005376. Its totient is φ = 12468096.

The previous prime is 38445031. The next prime is 38445079. The reversal of 38445072 is 27054483.

It is a super-2 number, since 2×38445072² = 2956047122170368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38445079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9048 + ... + 12599.

Almost surely, 2^38445072 is an apocalyptic number.

It is an amenable number.

38445072 is an abundant number, since it is smaller than the sum of its proper divisors (63560304).

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

38445072 is a wasteful number, since it uses less digits than its factorization.

38445072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21695 (or 21689 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 38445072 is about 6200.4090187664. The cubic root of 38445072 is about 337.5050117226.

The spelling of 38445072 in words is "thirty-eight million, four hundred forty-five thousand, seventy-two".