38297664 has 112 divisors (see below), whose sum is σ = 115824000. Its totient is φ = 12400128.

The previous prime is 38297663. The next prime is 38297671. The reversal of 38297664 is 46679283.

It is a super-2 number, since 2×38297664² = 2933422135713792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38297663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63637 + ... + 64235.

Almost surely, 2^38297664 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 38297664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57912000).

38297664 is an abundant number, since it is smaller than the sum of its proper divisors (77526336).

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

38297664 is a wasteful number, since it uses less digits than its factorization.

38297664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 641 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 38297664 is about 6188.5106447351. The cubic root of 38297664 is about 337.0730997522.

The spelling of 38297664 in words is "thirty-eight million, two hundred ninety-seven thousand, six hundred sixty-four".