2422978 has 4 divisors (see below), whose sum is σ = 3634470. Its totient is φ = 1211488.

The previous prime is 2422969. The next prime is 2422997. The reversal of 2422978 is 8792242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8792242 = 2 ⋅4396121.

It can be written as a sum of positive squares in only one way, i.e., 1996569 + 426409 = 1413^2 + 653^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605743 + ... + 605746.

2^2422978 is an apocalyptic number.

2422978 is a deficient number, since it is larger than the sum of its proper divisors (1211492).

2422978 is a wasteful number, since it uses less digits than its factorization.

2422978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211491.

The product of its digits is 16128, while the sum is 34.

The square root of 2422978 is about 1556.5917897766. The cubic root of 2422978 is about 134.3125177694.

The spelling of 2422978 in words is "two million, four hundred twenty-two thousand, nine hundred seventy-eight".