72272529 has 12 divisors (see below), whose sum is σ = 119307136. Its totient is φ = 41298552.

The previous prime is 72272527. The next prime is 72272531. The reversal of 72272529 is 92527227.

It is an interprime number because it is at equal distance from previous prime (72272527) and next prime (72272531).

It is not a de Polignac number, because 72272529 - 2¹ = 72272527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72272493 and 72272502.

It is not an unprimeable number, because it can be changed into a prime (72272521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 573529 + ... + 573654.

Almost surely, 2^72272529 is an apocalyptic number.

It is an amenable number.

72272529 is a deficient number, since it is larger than the sum of its proper divisors (47034607).

72272529 is a wasteful number, since it uses less digits than its factorization.

72272529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147196 (or 1147193 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 72272529 is about 8501.3251320015. The cubic root of 72272529 is about 416.5409955578.

The spelling of 72272529 in words is "seventy-two million, two hundred seventy-two thousand, five hundred twenty-nine".