40388960 has 24 divisors (see below), whose sum is σ = 95419296. Its totient is φ = 16155520.

The previous prime is 40388947. The next prime is 40388963. The reversal of 40388960 is 6988304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40388963) 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, 126056 + ... + 126375.

It is an arithmetic number, because the mean of its divisors is an integer number (3975804).

Almost surely, 2^40388960 is an apocalyptic number.

40388960 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40388960 is an abundant number, since it is smaller than the sum of its proper divisors (55030336).

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

40388960 is a wasteful number, since it uses less digits than its factorization.

40388960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252446 (or 252438 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 40388960 is about 6355.2309163397. The cubic root of 40388960 is about 343.1001359439.

The spelling of 40388960 in words is "forty million, three hundred eighty-eight thousand, nine hundred sixty".