72444807 has 16 divisors (see below), whose sum is σ = 108622080. Its totient is φ = 47713176.

The previous prime is 72444793. The next prime is 72444821. The reversal of 72444807 is 70844427.

It is an interprime number because it is at equal distance from previous prime (72444793) and next prime (72444821).

It is not a de Polignac number, because 72444807 - 2⁴ = 72444791 is a prime.

It is a super-2 number, since 2×72444807² = 10496500122534498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72444847) 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 15 ways as a sum of consecutive naturals, for example, 13923 + ... + 18404.

It is an arithmetic number, because the mean of its divisors is an integer number (6788880).

Almost surely, 2^72444807 is an apocalyptic number.

72444807 is a deficient number, since it is larger than the sum of its proper divisors (36177273).

72444807 is a wasteful number, since it uses less digits than its factorization.

72444807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32419 (or 32413 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 72444807 is about 8511.4515213329. The cubic root of 72444807 is about 416.8717063022.

The spelling of 72444807 in words is "seventy-two million, four hundred forty-four thousand, eight hundred seven".