72645310 has 8 divisors (see below), whose sum is σ = 130761576. Its totient is φ = 29058120.

The previous prime is 72645289. The next prime is 72645311. The reversal of 72645310 is 1354627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72645310² = 10554682129992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72645311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3632256 + ... + 3632275.

It is an arithmetic number, because the mean of its divisors is an integer number (16345197).

Almost surely, 2^72645310 is an apocalyptic number.

72645310 is a deficient number, since it is larger than the sum of its proper divisors (58116266).

72645310 is a wasteful number, since it uses less digits than its factorization.

72645310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7264538.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 72645310 is about 8523.2218086824. The cubic root of 72645310 is about 417.2559392038.

Adding to 72645310 its reverse (1354627), we get a palindrome (73999937).

The spelling of 72645310 in words is "seventy-two million, six hundred forty-five thousand, three hundred ten".