72734159 has 2 divisors, whose sum is σ = 72734160. Its totient is φ = 72734158.

The previous prime is 72734149. The next prime is 72734191. The reversal of 72734159 is 95143727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72734159 - 2¹⁶ = 72668623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72734149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36367079 + 36367080.

It is an arithmetic number, because the mean of its divisors is an integer number (36367080).

Almost surely, 2^72734159 is an apocalyptic number.

72734159 is a deficient number, since it is larger than the sum of its proper divisors (1).

72734159 is an equidigital number, since it uses as much as digits as its factorization.

72734159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 72734159 is about 8528.4323881942. The cubic root of 72734159 is about 417.4259784866.

The spelling of 72734159 in words is "seventy-two million, seven hundred thirty-four thousand, one hundred fifty-nine".