72347441 has 2 divisors, whose sum is σ = 72347442. Its totient is φ = 72347440.

The previous prime is 72347419. The next prime is 72347467. The reversal of 72347441 is 14474327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43230625 + 29116816 = 6575^2 + 5396^2 .

It is a cyclic number.

It is not a de Polignac number, because 72347441 - 2²⁶ = 5238577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72347398 and 72347407.

It is not a weakly prime, because it can be changed into another prime (72547441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36173720 + 36173721.

It is an arithmetic number, because the mean of its divisors is an integer number (36173721).

Almost surely, 2^72347441 is an apocalyptic number.

It is an amenable number.

72347441 is a deficient number, since it is larger than the sum of its proper divisors (1).

72347441 is an equidigital number, since it uses as much as digits as its factorization.

72347441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 32.

The square root of 72347441 is about 8505.7298922550. The cubic root of 72347441 is about 416.6848637030.

The spelling of 72347441 in words is "seventy-two million, three hundred forty-seven thousand, four hundred forty-one".