72469226 has 4 divisors (see below), whose sum is σ = 108703842. Its totient is φ = 36234612.

The previous prime is 72469219. The next prime is 72469261. The reversal of 72469226 is 62296427.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 70644025 + 1825201 = 8405^2 + 1351^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72469226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18117305 + ... + 18117308.

Almost surely, 2^72469226 is an apocalyptic number.

72469226 is a deficient number, since it is larger than the sum of its proper divisors (36234616).

72469226 is a wasteful number, since it uses less digits than its factorization.

72469226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36234615.

The product of its digits is 72576, while the sum is 38.

The square root of 72469226 is about 8512.8858796533. The cubic root of 72469226 is about 416.9185394114.

The spelling of 72469226 in words is "seventy-two million, four hundred sixty-nine thousand, two hundred twenty-six".