72274423 has 16 divisors (see below), whose sum is σ = 84582400. Its totient is φ = 61158240.

The previous prime is 72274421. The next prime is 72274439. The reversal of 72274423 is 32447227.

It is not a de Polignac number, because 72274423 - 2¹ = 72274421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72274421) 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, 2938 + ... + 12376.

It is an arithmetic number, because the mean of its divisors is an integer number (5286400).

Almost surely, 2^72274423 is an apocalyptic number.

72274423 is a deficient number, since it is larger than the sum of its proper divisors (12307977).

72274423 is a wasteful number, since it uses less digits than its factorization.

72274423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9502.

The product of its digits is 18816, while the sum is 31.

The square root of 72274423 is about 8501.4365256702. The cubic root of 72274423 is about 416.5446342007.

The spelling of 72274423 in words is "seventy-two million, two hundred seventy-four thousand, four hundred twenty-three".