72442727 has 6 divisors (see below), whose sum is σ = 84270168. Its totient is φ = 62093724.

The previous prime is 72442717. The next prime is 72442739. The reversal of 72442727 is 72724427.

It is not a de Polignac number, because 72442727 - 2⁸ = 72442471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72442717) 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 5 ways as a sum of consecutive naturals, for example, 739163 + ... + 739260.

It is an arithmetic number, because the mean of its divisors is an integer number (14045028).

Almost surely, 2^72442727 is an apocalyptic number.

72442727 is a deficient number, since it is larger than the sum of its proper divisors (11827441).

72442727 is a wasteful number, since it uses less digits than its factorization.

72442727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478437 (or 1478430 counting only the distinct ones).

The product of its digits is 43904, while the sum is 35.

The square root of 72442727 is about 8511.3293321314. The cubic root of 72442727 is about 416.8677165916.

The spelling of 72442727 in words is "seventy-two million, four hundred forty-two thousand, seven hundred twenty-seven".