13190978 has 8 divisors (see below), whose sum is σ = 20827920. Its totient is φ = 6248340.

The previous prime is 13190977. The next prime is 13190987. The reversal of 13190978 is 87909131.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 347131 = 13190978 / (1 + 3 + 1 + 9 + 0 + 9 + 7 + 8).

It is not an unprimeable number, because it can be changed into a prime (13190977) 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, 173528 + ... + 173603.

It is an arithmetic number, because the mean of its divisors is an integer number (2603490).

Almost surely, 2^13190978 is an apocalyptic number.

13190978 is a deficient number, since it is larger than the sum of its proper divisors (7636942).

13190978 is a wasteful number, since it uses less digits than its factorization.

13190978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347152.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 13190978 is about 3631.9386008026. The cubic root of 13190978 is about 236.2792944460.

The spelling of 13190978 in words is "thirteen million, one hundred ninety thousand, nine hundred seventy-eight".