40024940 has 12 divisors (see below), whose sum is σ = 84052416. Its totient is φ = 16009968.

The previous prime is 40024921. The next prime is 40024969. The reversal of 40024940 is 4942004.

It is a happy number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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, 1000604 + ... + 1000643.

It is an arithmetic number, because the mean of its divisors is an integer number (7004368).

Almost surely, 2^40024940 is an apocalyptic number.

It is an amenable number.

40024940 is an abundant number, since it is smaller than the sum of its proper divisors (44027476).

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

40024940 is a wasteful number, since it uses less digits than its factorization.

40024940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001256 (or 2001254 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40024940 is about 6326.5266932180. The cubic root of 40024940 is about 342.0662525683.

Adding to 40024940 its reverse (4942004), we get a palindrome (44966944).

The spelling of 40024940 in words is "forty million, twenty-four thousand, nine hundred forty".