23281994 has 8 divisors (see below), whose sum is σ = 35125380. Its totient is φ = 11573536.

The previous prime is 23281981. The next prime is 23282029. The reversal of 23281994 is 49918232.

It can be written as a sum of positive squares in 2 ways, for example, as 23280625 + 1369 = 4825^2 + 37^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33299 + ... + 33990.

Almost surely, 2^23281994 is an apocalyptic number.

23281994 is a deficient number, since it is larger than the sum of its proper divisors (11843386).

23281994 is a wasteful number, since it uses less digits than its factorization.

23281994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67464.

The product of its digits is 31104, while the sum is 38.

The square root of 23281994 is about 4825.1418631995. The cubic root of 23281994 is about 285.5442314484.

The spelling of 23281994 in words is "twenty-three million, two hundred eighty-one thousand, nine hundred ninety-four".