2178472 has 16 divisors (see below), whose sum is σ = 4102560. Its totient is φ = 1084464.

The previous prime is 2178467. The next prime is 2178479. The reversal of 2178472 is 2748712.

It is not an unprimeable number, because it can be changed into a prime (2178479) 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, 2013 + ... + 2899.

It is an arithmetic number, because the mean of its divisors is an integer number (256410).

2^2178472 is an apocalyptic number.

It is an amenable number.

2178472 is a deficient number, since it is larger than the sum of its proper divisors (1924088).

2178472 is a wasteful number, since it uses less digits than its factorization.

2178472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1196 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 2178472 is about 1475.9647692272. The cubic root of 2178472 is about 129.6335240715.

The spelling of 2178472 in words is "two million, one hundred seventy-eight thousand, four hundred seventy-two".