72349497 has 64 divisors (see below), whose sum is σ = 122757120. Its totient is φ = 41731200.

The previous prime is 72349471. The next prime is 72349499. The reversal of 72349497 is 79494327.

72349497 is a `hidden beast` number, since 72 + 3 + 494 + 97 = 666.

It is not a de Polignac number, because 72349497 - 2⁷ = 72349369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72349499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 991053 + ... + 991125.

It is an arithmetic number, because the mean of its divisors is an integer number (1918080).

Almost surely, 2^72349497 is an apocalyptic number.

It is an amenable number.

72349497 is a deficient number, since it is larger than the sum of its proper divisors (50407623).

72349497 is a wasteful number, since it uses less digits than its factorization.

72349497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 205 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 72349497 is about 8505.8507511007. The cubic root of 72349497 is about 416.6888108409.

The spelling of 72349497 in words is "seventy-two million, three hundred forty-nine thousand, four hundred ninety-seven".