72862291 has 2 divisors, whose sum is σ = 72862292. Its totient is φ = 72862290.

The previous prime is 72862277. The next prime is 72862301. The reversal of 72862291 is 19226827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72862291 - 2²³ = 64473683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72862291.

It is not a weakly prime, because it can be changed into another prime (72862261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36431145 + 36431146.

It is an arithmetic number, because the mean of its divisors is an integer number (36431146).

Almost surely, 2^72862291 is an apocalyptic number.

72862291 is a deficient number, since it is larger than the sum of its proper divisors (1).

72862291 is an equidigital number, since it uses as much as digits as its factorization.

72862291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 72862291 is about 8535.9411314746. The cubic root of 72862291 is about 417.6709539300.

It can be divided in two parts, 72862 and 291, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 72862291 in words is "seventy-two million, eight hundred sixty-two thousand, two hundred ninety-one".