22887994 has 4 divisors (see below), whose sum is σ = 34331994. Its totient is φ = 11443996.

The previous prime is 22887979. The next prime is 22888003. The reversal of 22887994 is 49978822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49978822 = 2 ⋅24989411.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 4782969 = 4255^2 + 2187^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721997 + ... + 5722000.

Almost surely, 2^22887994 is an apocalyptic number.

22887994 is a deficient number, since it is larger than the sum of its proper divisors (11444000).

22887994 is a wasteful number, since it uses less digits than its factorization.

22887994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11443999.

The product of its digits is 580608, while the sum is 49.

The square root of 22887994 is about 4784.1398390933. The cubic root of 22887994 is about 283.9243086655.

The spelling of 22887994 in words is "twenty-two million, eight hundred eighty-seven thousand, nine hundred ninety-four".