72724503 has 8 divisors (see below), whose sum is σ = 97136368. Its totient is φ = 48397824.

The previous prime is 72724501. The next prime is 72724507. The reversal of 72724503 is 30542727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72724503 - 2¹ = 72724501 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 (72724501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19276 + ... + 22737.

It is an arithmetic number, because the mean of its divisors is an integer number (12142046).

Almost surely, 2^72724503 is an apocalyptic number.

72724503 is a deficient number, since it is larger than the sum of its proper divisors (24411865).

72724503 is a wasteful number, since it uses less digits than its factorization.

72724503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42593.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 72724503 is about 8527.8662630227. The cubic root of 72724503 is about 417.4075055357.

The spelling of 72724503 in words is "seventy-two million, seven hundred twenty-four thousand, five hundred three".