40648004 has 6 divisors (see below), whose sum is σ = 71134014. Its totient is φ = 20324000.

The previous prime is 40647983. The next prime is 40648007. The reversal of 40648004 is 40084604.

It can be written as a sum of positive squares in only one way, i.e., 33085504 + 7562500 = 5752^2 + 2750^2 .

It is not an unprimeable number, because it can be changed into a prime (40648007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080997 + ... + 5081004.

It is an arithmetic number, because the mean of its divisors is an integer number (11855669).

Almost surely, 2^40648004 is an apocalyptic number.

It is an amenable number.

40648004 is a deficient number, since it is larger than the sum of its proper divisors (30486010).

40648004 is a wasteful number, since it uses less digits than its factorization.

40648004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10162005 (or 10162003 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 40648004 is about 6375.5787188302. The cubic root of 40648004 is about 343.8320908516.

The spelling of 40648004 in words is "forty million, six hundred forty-eight thousand, four".