72275122 has 8 divisors (see below), whose sum is σ = 108450972. Its totient is φ = 36124800.

The previous prime is 72275113. The next prime is 72275141. The reversal of 72275122 is 22157227.

It can be written as a sum of positive squares in 2 ways, for example, as 64979721 + 7295401 = 8061^2 + 2701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72275122² = 10447386520229768, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 4222 + ... + 12742.

Almost surely, 2^72275122 is an apocalyptic number.

72275122 is a deficient number, since it is larger than the sum of its proper divisors (36175850).

72275122 is a wasteful number, since it uses less digits than its factorization.

72275122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12764.

The product of its digits is 3920, while the sum is 28.

The square root of 72275122 is about 8501.4776362701. The cubic root of 72275122 is about 416.5459770628.

The spelling of 72275122 in words is "seventy-two million, two hundred seventy-five thousand, one hundred twenty-two".