40307628 has 24 divisors (see below), whose sum is σ = 94273200. Its totient is φ = 13404160.

The previous prime is 40307627. The next prime is 40307639. The reversal of 40307628 is 82670304.

40307628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40307595 and 40307604.

It is not an unprimeable number, because it can be changed into a prime (40307627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648 + ... + 9128.

It is an arithmetic number, because the mean of its divisors is an integer number (3928050).

Almost surely, 2^40307628 is an apocalyptic number.

It is an amenable number.

40307628 is an abundant number, since it is smaller than the sum of its proper divisors (53965572).

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

40307628 is a wasteful number, since it uses less digits than its factorization.

40307628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7937 (or 7935 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 40307628 is about 6348.8288683819. The cubic root of 40307628 is about 342.8696788075.

The spelling of 40307628 in words is "forty million, three hundred seven thousand, six hundred twenty-eight".