40512740 has 12 divisors (see below), whose sum is σ = 85076796. Its totient is φ = 16205088.

The previous prime is 40512733. The next prime is 40512749. The reversal of 40512740 is 4721504.

It can be written as a sum of positive squares in 2 ways, for example, as 17106496 + 23406244 = 4136^2 + 4838^2 .

It is not an unprimeable number, because it can be changed into a prime (40512749) 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, 1012799 + ... + 1012838.

It is an arithmetic number, because the mean of its divisors is an integer number (7089733).

Almost surely, 2^40512740 is an apocalyptic number.

It is an amenable number.

40512740 is an abundant number, since it is smaller than the sum of its proper divisors (44564056).

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

40512740 is a wasteful number, since it uses less digits than its factorization.

40512740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025646 (or 2025644 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40512740 is about 6364.9619009072. The cubic root of 40512740 is about 343.4502780266.

The spelling of 40512740 in words is "forty million, five hundred twelve thousand, seven hundred forty".