40840372 has 12 divisors (see below), whose sum is σ = 71831200. Its totient is φ = 20317176.

The previous prime is 40840363. The next prime is 40840379. The reversal of 40840372 is 27304804.

It is a self number, because there is not a number n which added to its sum of digits gives 40840372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40840379) 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, 24858 + ... + 26449.

Almost surely, 2^40840372 is an apocalyptic number.

It is an amenable number.

40840372 is a deficient number, since it is larger than the sum of its proper divisors (30990828).

40840372 is a wasteful number, since it uses less digits than its factorization.

40840372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51510 (or 51508 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 40840372 is about 6390.6472285677. The cubic root of 40840372 is about 344.3736363023.

The spelling of 40840372 in words is "forty million, eight hundred forty thousand, three hundred seventy-two".