22028274 has 20 divisors (see below), whose sum is σ = 49360014. Its totient is φ = 7342704.

The previous prime is 22028269. The next prime is 22028287. The reversal of 22028274 is 47282022.

It can be written as a sum of positive squares in only one way, i.e., 14493249 + 7535025 = 3807^2 + 2745^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 67827 + ... + 68150.

Almost surely, 2^22028274 is an apocalyptic number.

22028274 is an abundant number, since it is smaller than the sum of its proper divisors (27331740).

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

22028274 is a wasteful number, since it uses less digits than its factorization.

22028274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135991 (or 135982 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 22028274 is about 4693.4288105819. The cubic root of 22028274 is about 280.3239193455.

The spelling of 22028274 in words is "twenty-two million, twenty-eight thousand, two hundred seventy-four".