22151404 has 12 divisors (see below), whose sum is σ = 42289128. Its totient is φ = 10068800.

The previous prime is 22151281. The next prime is 22151411. The reversal of 22151404 is 40415122.

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, 251677 + ... + 251764.

It is an arithmetic number, because the mean of its divisors is an integer number (3524094).

Almost surely, 2^22151404 is an apocalyptic number.

It is an amenable number.

22151404 is a deficient number, since it is larger than the sum of its proper divisors (20137724).

22151404 is a wasteful number, since it uses less digits than its factorization.

22151404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503456 (or 503454 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 22151404 is about 4706.5278072056. The cubic root of 22151404 is about 280.8452519447.

Adding to 22151404 its reverse (40415122), we get a palindrome (62566526).

The spelling of 22151404 in words is "twenty-two million, one hundred fifty-one thousand, four hundred four".