40457072 has 20 divisors (see below), whose sum is σ = 78607320. Its totient is φ = 20171328.

The previous prime is 40457071. The next prime is 40457101. The reversal of 40457072 is 27075404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40457071) 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, 2579 + ... + 9357.

It is an arithmetic number, because the mean of its divisors is an integer number (3930366).

Almost surely, 2^40457072 is an apocalyptic number.

It is an amenable number.

40457072 is a deficient number, since it is larger than the sum of its proper divisors (38150248).

40457072 is a wasteful number, since it uses less digits than its factorization.

40457072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160 (or 7154 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 40457072 is about 6360.5873942585. The cubic root of 40457072 is about 343.2928958146.

The spelling of 40457072 in words is "forty million, four hundred fifty-seven thousand, seventy-two".