40138792 has 16 divisors (see below), whose sum is σ = 79221600. Its totient is φ = 19013040.

The previous prime is 40138771. The next prime is 40138801. The reversal of 40138792 is 29783104.

It is a super-2 number, since 2×40138792² = 3222245246438528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131884 + ... + 132187.

It is an arithmetic number, because the mean of its divisors is an integer number (4951350).

Almost surely, 2^40138792 is an apocalyptic number.

It is an amenable number.

40138792 is a deficient number, since it is larger than the sum of its proper divisors (39082808).

40138792 is a wasteful number, since it uses less digits than its factorization.

40138792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264096 (or 264092 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 40138792 is about 6335.5182897692. The cubic root of 40138792 is about 342.3902843562.

It can be divided in two parts, 401 and 38792, that added together give a palindrome (39193).

The spelling of 40138792 in words is "forty million, one hundred thirty-eight thousand, seven hundred ninety-two".