2013978 has 8 divisors (see below), whose sum is σ = 4027968. Its totient is φ = 671324.

The previous prime is 2013967. The next prime is 2013983. The reversal of 2013978 is 8793102.

It is a happy number.

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

2013978 is an admirable number.

It is a super-2 number, since 2×2013978² = 8112214768968, which contains 22 as substring.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 167826 + ... + 167837.

It is an arithmetic number, because the mean of its divisors is an integer number (503496).

2^2013978 is an apocalyptic number.

2013978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2013978 is a wasteful number, since it uses less digits than its factorization.

2013978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335668.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2013978 is about 1419.1469268543. The cubic root of 2013978 is about 126.2849434366.

The spelling of 2013978 in words is "two million, thirteen thousand, nine hundred seventy-eight".