40457240 has 16 divisors (see below), whose sum is σ = 91028880. Its totient is φ = 16182880.

The previous prime is 40457231. The next prime is 40457269. The reversal of 40457240 is 4275404.

It is a congruent number.

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, 505676 + ... + 505755.

It is an arithmetic number, because the mean of its divisors is an integer number (5689305).

Almost surely, 2^40457240 is an apocalyptic number.

40457240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40457240 is an abundant number, since it is smaller than the sum of its proper divisors (50571640).

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

40457240 is a wasteful number, since it uses less digits than its factorization.

40457240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011442 (or 1011438 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 40457240 is about 6360.6006005722. The cubic root of 40457240 is about 343.2933709942.

The spelling of 40457240 in words is "forty million, four hundred fifty-seven thousand, two hundred forty".