22881394 has 4 divisors (see below), whose sum is σ = 34322094. Its totient is φ = 11440696.

The previous prime is 22881311. The next prime is 22881401. The reversal of 22881394 is 49318822.

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., 22439169 + 442225 = 4737^2 + 665^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5720347 + ... + 5720350.

Almost surely, 2^22881394 is an apocalyptic number.

22881394 is a deficient number, since it is larger than the sum of its proper divisors (11440700).

22881394 is a wasteful number, since it uses less digits than its factorization.

22881394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11440699.

The product of its digits is 27648, while the sum is 37.

The square root of 22881394 is about 4783.4500101914. The cubic root of 22881394 is about 283.8970151627.

The spelling of 22881394 in words is "twenty-two million, eight hundred eighty-one thousand, three hundred ninety-four".