2493978 has 32 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 776880.

The previous prime is 2493949. The next prime is 2493979. The reversal of 2493978 is 8793942.

It is not an unprimeable number, because it can be changed into a prime (2493979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14851 + ... + 15017.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^2493978 is an apocalyptic number.

2493978 is an abundant number, since it is smaller than the sum of its proper divisors (2828262).

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

2493978 is a wasteful number, since it uses less digits than its factorization.

2493978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its digits is 108864, while the sum is 42.

The square root of 2493978 is about 1579.2333583103. The cubic root of 2493978 is about 135.6118183937.

The spelling of 2493978 in words is "two million, four hundred ninety-three thousand, nine hundred seventy-eight".