72413233 has 2 divisors, whose sum is σ = 72413234. Its totient is φ = 72413232.

The previous prime is 72413221. The next prime is 72413287. The reversal of 72413233 is 33231427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53333809 + 19079424 = 7303^2 + 4368^2 .

It is a cyclic number.

It is not a de Polignac number, because 72413233 - 2⁹ = 72412721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72413198 and 72413207.

It is not a weakly prime, because it can be changed into another prime (72413293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36206616 + 36206617.

It is an arithmetic number, because the mean of its divisors is an integer number (36206617).

Almost surely, 2^72413233 is an apocalyptic number.

It is an amenable number.

72413233 is a deficient number, since it is larger than the sum of its proper divisors (1).

72413233 is an equidigital number, since it uses as much as digits as its factorization.

72413233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 25.

The square root of 72413233 is about 8509.5965239252. The cubic root of 72413233 is about 416.8111350413.

The spelling of 72413233 in words is "seventy-two million, four hundred thirteen thousand, two hundred thirty-three".