40103656 has 8 divisors (see below), whose sum is σ = 75194370. Its totient is φ = 20051824.

The previous prime is 40103653. The next prime is 40103659. The reversal of 40103656 is 65630104.

It is an interprime number because it is at equal distance from previous prime (40103653) and next prime (40103659).

It can be written as a sum of positive squares in only one way, i.e., 22714756 + 17388900 = 4766^2 + 4170^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 40103656.

It is not an unprimeable number, because it can be changed into a prime (40103653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2506471 + ... + 2506486.

Almost surely, 2^40103656 is an apocalyptic number.

It is an amenable number.

40103656 is a deficient number, since it is larger than the sum of its proper divisors (35090714).

40103656 is a wasteful number, since it uses less digits than its factorization.

40103656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5012963 (or 5012959 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40103656 is about 6332.7447445796. The cubic root of 40103656 is about 342.2903499668.

The spelling of 40103656 in words is "forty million, one hundred three thousand, six hundred fifty-six".