2872978 has 8 divisors (see below), whose sum is σ = 4380300. Its totient is φ = 1412880.

The previous prime is 2872973. The next prime is 2872981. The reversal of 2872978 is 8792782.

It can be written as a sum of positive squares in 2 ways, for example, as 1734489 + 1138489 = 1317^2 + 1067^2 .

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 (2872973) 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, 11653 + ... + 11896.

2^2872978 is an apocalyptic number.

2872978 is a deficient number, since it is larger than the sum of its proper divisors (1507322).

2872978 is a wasteful number, since it uses less digits than its factorization.

2872978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23612.

The product of its digits is 112896, while the sum is 43.

The square root of 2872978 is about 1694.9861356365. The cubic root of 2872978 is about 142.1600061078.

The spelling of 2872978 in words is "two million, eight hundred seventy-two thousand, nine hundred seventy-eight".