72739210 has 8 divisors (see below), whose sum is σ = 130930596. Its totient is φ = 29095680.

The previous prime is 72739157. The next prime is 72739211. The reversal of 72739210 is 1293727.

It can be written as a sum of positive squares in 2 ways, for example, as 72607441 + 131769 = 8521^2 + 363^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72739211) 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 3 ways as a sum of consecutive naturals, for example, 3636951 + ... + 3636970.

Almost surely, 2^72739210 is an apocalyptic number.

72739210 is a deficient number, since it is larger than the sum of its proper divisors (58191386).

72739210 is a wasteful number, since it uses less digits than its factorization.

72739210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7273928.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 72739210 is about 8528.7285101591. The cubic root of 72739210 is about 417.4356409333.

The spelling of 72739210 in words is "seventy-two million, seven hundred thirty-nine thousand, two hundred ten".