72296447 has 2 divisors, whose sum is σ = 72296448. Its totient is φ = 72296446.

The previous prime is 72296437. The next prime is 72296491. The reversal of 72296447 is 74469227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72296447 - 2¹² = 72292351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72296437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36148223 + 36148224.

It is an arithmetic number, because the mean of its divisors is an integer number (36148224).

Almost surely, 2^72296447 is an apocalyptic number.

72296447 is a deficient number, since it is larger than the sum of its proper divisors (1).

72296447 is an equidigital number, since it uses as much as digits as its factorization.

72296447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 72296447 is about 8502.7317375065. The cubic root of 72296447 is about 416.5869407638.

The spelling of 72296447 in words is "seventy-two million, two hundred ninety-six thousand, four hundred forty-seven".