72413293 has 2 divisors, whose sum is σ = 72413294. Its totient is φ = 72413292.

The previous prime is 72413291. The next prime is 72413309. The reversal of 72413293 is 39231427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57805609 + 14607684 = 7603^2 + 3822^2 .

It is a cyclic number.

It is not a de Polignac number, because 72413293 - 2¹ = 72413291 is a prime.

Together with 72413291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72413291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36206646 + 36206647.

It is an arithmetic number, because the mean of its divisors is an integer number (36206647).

Almost surely, 2^72413293 is an apocalyptic number.

It is an amenable number.

72413293 is a deficient number, since it is larger than the sum of its proper divisors (1).

72413293 is an equidigital number, since it uses as much as digits as its factorization.

72413293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 72413293 is about 8509.6000493560. The cubic root of 72413293 is about 416.8112501614.

The spelling of 72413293 in words is "seventy-two million, four hundred thirteen thousand, two hundred ninety-three".