22728114 has 20 divisors (see below), whose sum is σ = 50928174. Its totient is φ = 7575984.

The previous prime is 22728113. The next prime is 22728137. The reversal of 22728114 is 41182722.

It can be written as a sum of positive squares in only one way, i.e., 19053225 + 3674889 = 4365^2 + 1917^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22728113) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69987 + ... + 70310.

Almost surely, 2^22728114 is an apocalyptic number.

22728114 is an abundant number, since it is smaller than the sum of its proper divisors (28200060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22728114 is a wasteful number, since it uses less digits than its factorization.

22728114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140311 (or 140302 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 22728114 is about 4767.4011788395. The cubic root of 22728114 is about 283.2616624563.

The spelling of 22728114 in words is "twenty-two million, seven hundred twenty-eight thousand, one hundred fourteen".