40745920 has 28 divisors (see below), whose sum is σ = 97026984. Its totient is φ = 16298240.

The previous prime is 40745893. The next prime is 40745927. The reversal of 40745920 is 2954704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40745927) 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, 63346 + ... + 63985.

Almost surely, 2^40745920 is an apocalyptic number.

40745920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40745920 is an abundant number, since it is smaller than the sum of its proper divisors (56281064).

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

40745920 is a wasteful number, since it uses less digits than its factorization.

40745920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127348 (or 127338 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 40745920 is about 6383.2530891388. The cubic root of 40745920 is about 344.1079524183.

The spelling of 40745920 in words is "forty million, seven hundred forty-five thousand, nine hundred twenty".