38457664 has 28 divisors (see below), whose sum is σ = 87217504. Its totient is φ = 16481664.

The previous prime is 38457649. The next prime is 38457667. The reversal of 38457664 is 46675483.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-3 number, since 3×38457664³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38457664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38457667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42474 + ... + 43369.

Almost surely, 2^38457664 is an apocalyptic number.

It is an amenable number.

38457664 is an abundant number, since it is smaller than the sum of its proper divisors (48759840).

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

38457664 is an equidigital number, since it uses as much as digits as its factorization.

38457664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85862 (or 85852 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 38457664 is about 6201.4243525177. The cubic root of 38457664 is about 337.5418556229.

The spelling of 38457664 in words is "thirty-eight million, four hundred fifty-seven thousand, six hundred sixty-four".