40403780 has 24 divisors (see below), whose sum is σ = 85521408. Its totient is φ = 16033248.

The previous prime is 40403771. The next prime is 40403833. The reversal of 40403780 is 8730404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5414 + ... + 10493.

It is an arithmetic number, because the mean of its divisors is an integer number (3563392).

Almost surely, 2^40403780 is an apocalyptic number.

It is an amenable number.

40403780 is an abundant number, since it is smaller than the sum of its proper divisors (45117628).

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

40403780 is a wasteful number, since it uses less digits than its factorization.

40403780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16043 (or 16041 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 40403780 is about 6356.3967780497. The cubic root of 40403780 is about 343.1420956133.

The spelling of 40403780 in words is "forty million, four hundred three thousand, seven hundred eighty".