13402478 has 16 divisors (see below), whose sum is σ = 20946816. Its totient is φ = 6424320.

The previous prime is 13402471. The next prime is 13402513. The reversal of 13402478 is 87420431.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13402478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402471) 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 7 ways as a sum of consecutive naturals, for example, 6050 + ... + 7962.

It is an arithmetic number, because the mean of its divisors is an integer number (1309176).

Almost surely, 2^13402478 is an apocalyptic number.

13402478 is a deficient number, since it is larger than the sum of its proper divisors (7544338).

13402478 is a wasteful number, since it uses less digits than its factorization.

13402478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 13402478 is about 3660.9394969051. The cubic root of 13402478 is about 237.5354141096.

The spelling of 13402478 in words is "thirteen million, four hundred two thousand, four hundred seventy-eight".