13072278 has 16 divisors (see below), whose sum is σ = 26184816. Its totient is φ = 4350720.

The previous prime is 13072273. The next prime is 13072289. The reversal of 13072278 is 87227031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13072273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4050 + ... + 6522.

It is an arithmetic number, because the mean of its divisors is an integer number (1636551).

Almost surely, 2^13072278 is an apocalyptic number.

13072278 is an abundant number, since it is smaller than the sum of its proper divisors (13112538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13072278 is a wasteful number, since it uses less digits than its factorization.

13072278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 13072278 is about 3615.5605374547. The cubic root of 13072278 is about 235.5684322925.

The spelling of 13072278 in words is "thirteen million, seventy-two thousand, two hundred seventy-eight".