13284978 has 48 divisors (see below), whose sum is σ = 31381920. Its totient is φ = 3737664.

The previous prime is 13284967. The next prime is 13284983. The reversal of 13284978 is 87948231.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21153 + ... + 21771.

It is an arithmetic number, because the mean of its divisors is an integer number (653790).

Almost surely, 2^13284978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13284978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15690960).

13284978 is an abundant number, since it is smaller than the sum of its proper divisors (18096942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13284978 is a wasteful number, since it uses less digits than its factorization.

13284978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711 (or 704 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 13284978 is about 3644.8563757712. The cubic root of 13284978 is about 236.8392151278.

The spelling of 13284978 in words is "thirteen million, two hundred eighty-four thousand, nine hundred seventy-eight".