72448690 has 16 divisors (see below), whose sum is σ = 130580928. Its totient is φ = 28940976.

The previous prime is 72448619. The next prime is 72448693. The reversal of 72448690 is 9684427.

It is a super-2 number, since 2×72448690² = 10497625365432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72448693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3829 + ... + 12631.

It is an arithmetic number, because the mean of its divisors is an integer number (8161308).

Almost surely, 2^72448690 is an apocalyptic number.

72448690 is a deficient number, since it is larger than the sum of its proper divisors (58132238).

72448690 is a wasteful number, since it uses less digits than its factorization.

72448690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 72448690 is about 8511.6796227302. The cubic root of 72448690 is about 416.8791541971.

The spelling of 72448690 in words is "seventy-two million, four hundred forty-eight thousand, six hundred ninety".