2992978 has 4 divisors (see below), whose sum is σ = 4489470. Its totient is φ = 1496488.

The previous prime is 2992973. The next prime is 2992987. The reversal of 2992978 is 8792992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2152089 + 840889 = 1467^2 + 917^2 .

It is not an unprimeable number, because it can be changed into a prime (2992973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748243 + ... + 748246.

2^2992978 is an apocalyptic number.

2992978 is a deficient number, since it is larger than the sum of its proper divisors (1496492).

2992978 is a wasteful number, since it uses less digits than its factorization.

2992978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496491.

The product of its digits is 163296, while the sum is 46.

The square root of 2992978 is about 1730.0225432057. The cubic root of 2992978 is about 144.1123416035.

The spelling of 2992978 in words is "two million, nine hundred ninety-two thousand, nine hundred seventy-eight".