2722978 has 16 divisors (see below), whose sum is σ = 4333824. Its totient is φ = 1280880.

The previous prime is 2722969. The next prime is 2722987. The reversal of 2722978 is 8792272.

It is an interprime number because it is at equal distance from previous prime (2722969) and next prime (2722987).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1701 + ... + 2887.

It is an arithmetic number, because the mean of its divisors is an integer number (270864).

2^2722978 is an apocalyptic number.

2722978 is a deficient number, since it is larger than the sum of its proper divisors (1610846).

2722978 is a wasteful number, since it uses less digits than its factorization.

2722978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257.

The product of its digits is 28224, while the sum is 37.

The square root of 2722978 is about 1650.1448421275. The cubic root of 2722978 is about 139.6415660988.

It can be divided in two parts, 27 and 22978, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 2722978 in words is "two million, seven hundred twenty-two thousand, nine hundred seventy-eight".