72456113 has 4 divisors (see below), whose sum is σ = 72977520. Its totient is φ = 71934708.

The previous prime is 72456107. The next prime is 72456121. The reversal of 72456113 is 31165427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31165427 = 907 ⋅34361.

It is a cyclic number.

It is not a de Polignac number, because 72456113 - 2⁸ = 72455857 is a prime.

It is a super-2 number, since 2×72456113² = 10499776622137538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72456103) 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 3 ways as a sum of consecutive naturals, for example, 260495 + ... + 260772.

It is an arithmetic number, because the mean of its divisors is an integer number (18244380).

Almost surely, 2^72456113 is an apocalyptic number.

It is an amenable number.

72456113 is a deficient number, since it is larger than the sum of its proper divisors (521407).

72456113 is a wasteful number, since it uses less digits than its factorization.

72456113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521406.

The product of its digits is 5040, while the sum is 29.

The square root of 72456113 is about 8512.1156594586. The cubic root of 72456113 is about 416.8933913456.

The spelling of 72456113 in words is "seventy-two million, four hundred fifty-six thousand, one hundred thirteen".