72472403 has 4 divisors (see below), whose sum is σ = 76286760. Its totient is φ = 68658048.

The previous prime is 72472399. The next prime is 72472457. The reversal of 72472403 is 30427427.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72472403 - 2² = 72472399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72472303) 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, 1907150 + ... + 1907187.

It is an arithmetic number, because the mean of its divisors is an integer number (19071690).

Almost surely, 2^72472403 is an apocalyptic number.

72472403 is a deficient number, since it is larger than the sum of its proper divisors (3814357).

72472403 is a wasteful number, since it uses less digits than its factorization.

72472403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814356.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 72472403 is about 8513.0724770790. The cubic root of 72472403 is about 416.9246317944.

The spelling of 72472403 in words is "seventy-two million, four hundred seventy-two thousand, four hundred three".