40000628 has 24 divisors (see below), whose sum is σ = 73615080. Its totient is φ = 18990720.

The previous prime is 40000627. The next prime is 40000651. The reversal of 40000628 is 82600004.

It can be written as a sum of positive squares in 4 ways, for example, as 2521744 + 37478884 = 1588^2 + 6122^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4250 + ... + 9902.

It is an arithmetic number, because the mean of its divisors is an integer number (3067295).

Almost surely, 2^40000628 is an apocalyptic number.

It is an amenable number.

40000628 is a deficient number, since it is larger than the sum of its proper divisors (33614452).

40000628 is a wasteful number, since it uses less digits than its factorization.

40000628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747 (or 5745 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 40000628 is about 6324.6049679012. The cubic root of 40000628 is about 341.9969791008.

The spelling of 40000628 in words is "forty million, six hundred twenty-eight", and thus it is an aban number.