72798293 has 2 divisors, whose sum is σ = 72798294. Its totient is φ = 72798292.

The previous prime is 72798281. The next prime is 72798307. The reversal of 72798293 is 39289727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57486724 + 15311569 = 7582^2 + 3913^2 .

It is a cyclic number.

It is not a de Polignac number, because 72798293 - 2²² = 68603989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72798223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36399146 + 36399147.

It is an arithmetic number, because the mean of its divisors is an integer number (36399147).

Almost surely, 2^72798293 is an apocalyptic number.

It is an amenable number.

72798293 is a deficient number, since it is larger than the sum of its proper divisors (1).

72798293 is an equidigital number, since it uses as much as digits as its factorization.

72798293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 72798293 is about 8532.1915707513. The cubic root of 72798293 is about 417.5486321491.

The spelling of 72798293 in words is "seventy-two million, seven hundred ninety-eight thousand, two hundred ninety-three".