12540722 has 8 divisors (see below), whose sum is σ = 19801200. Its totient is φ = 5940324.

The previous prime is 12540691. The next prime is 12540733. The reversal of 12540722 is 22704521.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164972 + ... + 165047.

It is an arithmetic number, because the mean of its divisors is an integer number (2475150).

Almost surely, 2^12540722 is an apocalyptic number.

12540722 is a deficient number, since it is larger than the sum of its proper divisors (7260478).

12540722 is a wasteful number, since it uses less digits than its factorization.

12540722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330040.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 12540722 is about 3541.2881836981. The cubic root of 12540722 is about 232.3311882089.

The spelling of 12540722 in words is "twelve million, five hundred forty thousand, seven hundred twenty-two".