40993720 has 16 divisors (see below), whose sum is σ = 92235960. Its totient is φ = 16397472.

The previous prime is 40993709. The next prime is 40993721. The reversal of 40993720 is 2739904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40993721) 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, 512382 + ... + 512461.

Almost surely, 2^40993720 is an apocalyptic number.

40993720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40993720 is an abundant number, since it is smaller than the sum of its proper divisors (51242240).

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

40993720 is a wasteful number, since it uses less digits than its factorization.

40993720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024854 (or 1024850 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 40993720 is about 6402.6338330409. The cubic root of 40993720 is about 344.8041176074.

The spelling of 40993720 in words is "forty million, nine hundred ninety-three thousand, seven hundred twenty".