2445978 has 32 divisors (see below), whose sum is σ = 5124672. Its totient is φ = 777600.

The previous prime is 2445973. The next prime is 2445979. The reversal of 2445978 is 8795442.

It is not an unprimeable number, because it can be changed into a prime (2445973) 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, 14925 + ... + 15087.

It is an arithmetic number, because the mean of its divisors is an integer number (160146).

2^2445978 is an apocalyptic number.

2445978 is an abundant number, since it is smaller than the sum of its proper divisors (2678694).

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

2445978 is a wasteful number, since it uses less digits than its factorization.

2445978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270.

The product of its digits is 80640, while the sum is 39.

The square root of 2445978 is about 1563.9622757599. The cubic root of 2445978 is about 134.7361650988.

The spelling of 2445978 in words is "two million, four hundred forty-five thousand, nine hundred seventy-eight".