72103036 has 12 divisors (see below), whose sum is σ = 126747712. Its totient is φ = 35889408.

The previous prime is 72103033. The next prime is 72103067. The reversal of 72103036 is 63030127.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 72102998 and 72103016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72103033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39525 + ... + 41308.

Almost surely, 2^72103036 is an apocalyptic number.

It is an amenable number.

72103036 is a deficient number, since it is larger than the sum of its proper divisors (54644676).

72103036 is a wasteful number, since it uses less digits than its factorization.

72103036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81060 (or 81058 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 72103036 is about 8491.3506581698. The cubic root of 72103036 is about 416.2151177231.

The spelling of 72103036 in words is "seventy-two million, one hundred three thousand, thirty-six".