72622413 has 10 divisors (see below), whose sum is σ = 108485454. Its totient is φ = 48414888.

The previous prime is 72622397. The next prime is 72622423. The reversal of 72622413 is 31422627.

It can be written as a sum of positive squares in only one way, i.e., 37124649 + 35497764 = 6093^2 + 5958^2 .

It is not a de Polignac number, because 72622413 - 2⁴ = 72622397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72622423) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 448206 + ... + 448367.

Almost surely, 2^72622413 is an apocalyptic number.

It is an amenable number.

72622413 is a deficient number, since it is larger than the sum of its proper divisors (35863041).

72622413 is an equidigital number, since it uses as much as digits as its factorization.

72622413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896585 (or 896576 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 72622413 is about 8521.8784900983. The cubic root of 72622413 is about 417.2120964415.

The spelling of 72622413 in words is "seventy-two million, six hundred twenty-two thousand, four hundred thirteen".