40308056 has 8 divisors (see below), whose sum is σ = 75577620. Its totient is φ = 20154024.

The previous prime is 40308053. The next prime is 40308083. The reversal of 40308056 is 65080304.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40308053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2519246 + ... + 2519261.

Almost surely, 2^40308056 is an apocalyptic number.

It is an amenable number.

40308056 is a deficient number, since it is larger than the sum of its proper divisors (35269564).

40308056 is a wasteful number, since it uses less digits than its factorization.

40308056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038513 (or 5038509 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40308056 is about 6348.8625752965. The cubic root of 40308056 is about 342.8708923719.

The spelling of 40308056 in words is "forty million, three hundred eight thousand, fifty-six".