38387664 has 60 divisors (see below), whose sum is σ = 122782816. Its totient is φ = 10967616.

The previous prime is 38387659. The next prime is 38387681. The reversal of 38387664 is 46678383.

It is a super-2 number, since 2×38387664² = 2947225494753792, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18034 + ... + 20049.

Almost surely, 2^38387664 is an apocalyptic number.

It is an amenable number.

38387664 is an abundant number, since it is smaller than the sum of its proper divisors (84395152).

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

38387664 is a wasteful number, since it uses less digits than its factorization.

38387664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38104 (or 38095 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 38387664 is about 6195.7779172595. Note that the first 3 decimals coincide. The cubic root of 38387664 is about 337.3369352189.

The spelling of 38387664 in words is "thirty-eight million, three hundred eighty-seven thousand, six hundred sixty-four".