22274816 has 18 divisors (see below), whose sum is σ = 44463132. Its totient is φ = 11137280.

The previous prime is 22274809. The next prime is 22274869. The reversal of 22274816 is 61847222.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43250 + ... + 43761.

It is an arithmetic number, because the mean of its divisors is an integer number (2470174).

Almost surely, 2^22274816 is an apocalyptic number.

It is an amenable number.

22274816 is a deficient number, since it is larger than the sum of its proper divisors (22188316).

22274816 is an frugal number, since it uses more digits than its factorization.

22274816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87027 (or 87013 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 22274816 is about 4719.6203237125. The cubic root of 22274816 is about 281.3658435710.

The spelling of 22274816 in words is "twenty-two million, two hundred seventy-four thousand, eight hundred sixteen".