38403240 has 32 divisors (see below), whose sum is σ = 115210080. Its totient is φ = 10240832.

The previous prime is 38403191. The next prime is 38403271. The reversal of 38403240 is 4230483.

38403240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 38403240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159894 + ... + 160133.

It is an arithmetic number, because the mean of its divisors is an integer number (3600315).

Almost surely, 2^38403240 is an apocalyptic number.

38403240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38403240 is an abundant number, since it is smaller than the sum of its proper divisors (76806840).

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

38403240 is a wasteful number, since it uses less digits than its factorization.

38403240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320041 (or 320037 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 38403240 is about 6197.0347747935. The cubic root of 38403240 is about 337.3825544713.

The spelling of 38403240 in words is "thirty-eight million, four hundred three thousand, two hundred forty".