23942978 has 8 divisors (see below), whose sum is σ = 36406668. Its totient is φ = 11807424.

The previous prime is 23942969. The next prime is 23942981. The reversal of 23942978 is 87924932.

It can be written as a sum of positive squares in 2 ways, for example, as 22534009 + 1408969 = 4747^2 + 1187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81851 + ... + 82142.

Almost surely, 2^23942978 is an apocalyptic number.

23942978 is a deficient number, since it is larger than the sum of its proper divisors (12463690).

23942978 is a wasteful number, since it uses less digits than its factorization.

23942978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164068.

The product of its digits is 217728, while the sum is 44.

The square root of 23942978 is about 4893.1562411188. The cubic root of 23942978 is about 288.2212885813.

The spelling of 23942978 in words is "twenty-three million, nine hundred forty-two thousand, nine hundred seventy-eight".