38008440 has 80 divisors (see below), whose sum is σ = 127761480. Its totient is φ = 10134720.

The previous prime is 38008423. The next prime is 38008441. The reversal of 38008440 is 4480083.

It is a super-2 number, since 2×38008440² = 2889283022467200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38008441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2626 + ... + 9105.

Almost surely, 2^38008440 is an apocalyptic number.

38008440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38008440 is an abundant number, since it is smaller than the sum of its proper divisors (89753040).

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

38008440 is a wasteful number, since it uses less digits than its factorization.

38008440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11754 (or 11741 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 38008440 is about 6165.0985393585. The cubic root of 38008440 is about 336.2224292518. Note that the first 3 decimals are identical.

The spelling of 38008440 in words is "thirty-eight million, eight thousand, four hundred forty".