72272275 has 12 divisors (see below), whose sum is σ = 90544552. Its totient is φ = 57219840.

The previous prime is 72272273. The next prime is 72272303. The reversal of 72272275 is 57227227.

It is a happy number.

It is not a de Polignac number, because 72272275 - 2¹ = 72272273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72272275.

It is not an unprimeable number, because it can be changed into a prime (72272273) by changing a digit.

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, 12477 + ... + 17326.

Almost surely, 2^72272275 is an apocalyptic number.

72272275 is a deficient number, since it is larger than the sum of its proper divisors (18272277).

72272275 is a wasteful number, since it uses less digits than its factorization.

72272275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29910 (or 29905 counting only the distinct ones).

The product of its digits is 27440, while the sum is 34.

The square root of 72272275 is about 8501.3101931408. The cubic root of 72272275 is about 416.5405075830.

The spelling of 72272275 in words is "seventy-two million, two hundred seventy-two thousand, two hundred seventy-five".