22280284 has 36 divisors (see below), whose sum is σ = 44086896. Its totient is φ = 9829248.

The previous prime is 22280281. The next prime is 22280329. The reversal of 22280284 is 48208222.

It is a super-2 number, since 2×22280284² = 992822110241312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22280281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14832 + ... + 16264.

It is an arithmetic number, because the mean of its divisors is an integer number (1224636).

Almost surely, 2^22280284 is an apocalyptic number.

It is an amenable number.

22280284 is a deficient number, since it is larger than the sum of its proper divisors (21806612).

22280284 is a wasteful number, since it uses less digits than its factorization.

22280284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 22280284 is about 4720.1995720520. The cubic root of 22280284 is about 281.3888648246.

The spelling of 22280284 in words is "twenty-two million, two hundred eighty thousand, two hundred eighty-four".