72815463 has 16 divisors (see below), whose sum is σ = 123285760. Its totient is φ = 41608728.

The previous prime is 72815459. The next prime is 72815473. The reversal of 72815463 is 36451827.

It is not a de Polignac number, because 72815463 - 2² = 72815459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72815443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192445 + ... + 192822.

It is an arithmetic number, because the mean of its divisors is an integer number (7705360).

Almost surely, 2^72815463 is an apocalyptic number.

72815463 is a deficient number, since it is larger than the sum of its proper divisors (50470297).

72815463 is a wasteful number, since it uses less digits than its factorization.

72815463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385283 (or 385277 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 72815463 is about 8533.1977007450. The cubic root of 72815463 is about 417.5814568494.

The spelling of 72815463 in words is "seventy-two million, eight hundred fifteen thousand, four hundred sixty-three".