13480978 has 24 divisors (see below), whose sum is σ = 23704704. Its totient is φ = 5733000.

The previous prime is 13480891. The next prime is 13480979. The reversal of 13480978 is 87908431.

It is a self number, because there is not a number n which added to its sum of digits gives 13480978.

It is not an unprimeable number, because it can be changed into a prime (13480979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14343 + ... + 15253.

It is an arithmetic number, because the mean of its divisors is an integer number (987696).

Almost surely, 2^13480978 is an apocalyptic number.

13480978 is a deficient number, since it is larger than the sum of its proper divisors (10223726).

13480978 is a wasteful number, since it uses less digits than its factorization.

13480978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 13480978 is about 3671.6451353583. The cubic root of 13480978 is about 237.9982698836.

The spelling of 13480978 in words is "thirteen million, four hundred eighty thousand, nine hundred seventy-eight".