2144978 has 8 divisors (see below), whose sum is σ = 3510000. Its totient is φ = 974980.

The previous prime is 2144977. The next prime is 2144993. The reversal of 2144978 is 8794412.

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

It is not an unprimeable number, because it can be changed into a prime (2144971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48728 + ... + 48771.

It is an arithmetic number, because the mean of its divisors is an integer number (438750).

2^2144978 is an apocalyptic number.

2144978 is a deficient number, since it is larger than the sum of its proper divisors (1365022).

2144978 is a wasteful number, since it uses less digits than its factorization.

2144978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97512.

The product of its digits is 16128, while the sum is 35.

The square root of 2144978 is about 1464.5743408923. The cubic root of 2144978 is about 128.9657181103.

The spelling of 2144978 in words is "two million, one hundred forty-four thousand, nine hundred seventy-eight".