40338572 has 18 divisors (see below), whose sum is σ = 71485092. Its totient is φ = 19915704.

The previous prime is 40338553. The next prime is 40338587. The reversal of 40338572 is 27583304.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131243 + ... + 131549.

It is an arithmetic number, because the mean of its divisors is an integer number (3971394).

Almost surely, 2^40338572 is an apocalyptic number.

It is an amenable number.

40338572 is a deficient number, since it is larger than the sum of its proper divisors (31146520).

40338572 is a wasteful number, since it uses less digits than its factorization.

40338572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 40338572 is about 6351.2653857322. The cubic root of 40338572 is about 342.9573962446.

The spelling of 40338572 in words is "forty million, three hundred thirty-eight thousand, five hundred seventy-two".