72910473 has 4 divisors (see below), whose sum is σ = 97213968. Its totient is φ = 48606980.

The previous prime is 72910471. The next prime is 72910511. The reversal of 72910473 is 37401927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72910473 - 2¹ = 72910471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72910471) 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, 12151743 + ... + 12151748.

It is an arithmetic number, because the mean of its divisors is an integer number (24303492).

Almost surely, 2^72910473 is an apocalyptic number.

It is an amenable number.

72910473 is a deficient number, since it is larger than the sum of its proper divisors (24303495).

72910473 is a wasteful number, since it uses less digits than its factorization.

72910473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24303494.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 72910473 is about 8538.7629666129. The cubic root of 72910473 is about 417.7629987421.

The spelling of 72910473 in words is "seventy-two million, nine hundred ten thousand, four hundred seventy-three".