12961790 has 16 divisors (see below), whose sum is σ = 23435568. Its totient is φ = 5161536.

The previous prime is 12961789. The next prime is 12961841. The reversal of 12961790 is 9716921.

It is a self number, because there is not a number n which added to its sum of digits gives 12961790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (1464723).

Almost surely, 2^12961790 is an apocalyptic number.

12961790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12961790 is a deficient number, since it is larger than the sum of its proper divisors (10473778).

12961790 is a wasteful number, since it uses less digits than its factorization.

12961790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 12961790 is about 3600.2486025273. The cubic root of 12961790 is about 234.9028721900.

The spelling of 12961790 in words is "twelve million, nine hundred sixty-one thousand, seven hundred ninety".