38401992 has 32 divisors (see below), whose sum is σ = 106672800. Its totient is φ = 12800592.

The previous prime is 38401991. The next prime is 38401999. The reversal of 38401992 is 29910483.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (38401991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88678 + ... + 89109.

It is an arithmetic number, because the mean of its divisors is an integer number (3333525).

Almost surely, 2^38401992 is an apocalyptic number.

It is an amenable number.

38401992 is an abundant number, since it is smaller than the sum of its proper divisors (68270808).

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

38401992 is a wasteful number, since it uses less digits than its factorization.

38401992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177802 (or 177792 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 38401992 is about 6196.9340806563. The cubic root of 38401992 is about 337.3788997624.

It can be divided in two parts, 38401 and 992, that added together give a palindrome (39393).

The spelling of 38401992 in words is "thirty-eight million, four hundred one thousand, nine hundred ninety-two".