40644148 has 6 divisors (see below), whose sum is σ = 71127266. Its totient is φ = 20322072.

The previous prime is 40644139. The next prime is 40644169. The reversal of 40644148 is 84144604.

It can be written as a sum of positive squares in only one way, i.e., 21178404 + 19465744 = 4602^2 + 4412^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080515 + ... + 5080522.

Almost surely, 2^40644148 is an apocalyptic number.

It is an amenable number.

40644148 is a deficient number, since it is larger than the sum of its proper divisors (30483118).

40644148 is a wasteful number, since it uses less digits than its factorization.

40644148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161041 (or 10161039 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 40644148 is about 6375.2763077376. The cubic root of 40644148 is about 343.8212181696.

The spelling of 40644148 in words is "forty million, six hundred forty-four thousand, one hundred forty-eight".