72297126 has 24 divisors (see below), whose sum is σ = 170884584. Its totient is φ = 21908160.

The previous prime is 72297101. The next prime is 72297131. The reversal of 72297126 is 62179227.

It is a congruent number.

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 in 11 ways as a sum of consecutive naturals, for example, 182371 + ... + 182766.

It is an arithmetic number, because the mean of its divisors is an integer number (7120191).

Almost surely, 2^72297126 is an apocalyptic number.

72297126 is an abundant number, since it is smaller than the sum of its proper divisors (98587458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72297126 is a wasteful number, since it uses less digits than its factorization.

72297126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365156 (or 365153 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 72297126 is about 8502.7716657570. The cubic root of 72297126 is about 416.5882449388.

The spelling of 72297126 in words is "seventy-two million, two hundred ninety-seven thousand, one hundred twenty-six".