40648540 has 24 divisors (see below), whose sum is σ = 85554000. Its totient is φ = 16222848.

The previous prime is 40648537. The next prime is 40648583. The reversal of 40648540 is 4584604.

It is a congruent number.

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, 7944 + ... + 12016.

It is an arithmetic number, because the mean of its divisors is an integer number (3564750).

Almost surely, 2^40648540 is an apocalyptic number.

It is an amenable number.

40648540 is an abundant number, since it is smaller than the sum of its proper divisors (44905460).

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

40648540 is a wasteful number, since it uses less digits than its factorization.

40648540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4581 (or 4579 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 40648540 is about 6375.6207540913. The cubic root of 40648540 is about 343.8336021451.

The spelling of 40648540 in words is "forty million, six hundred forty-eight thousand, five hundred forty".