22228620 has 24 divisors (see below), whose sum is σ = 62240304. Its totient is φ = 5927616.

The previous prime is 22228567. The next prime is 22228621. The reversal of 22228620 is 2682222.

It is a super-2 number, since 2×22228620² = 988223094208800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22228621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185179 + ... + 185298.

It is an arithmetic number, because the mean of its divisors is an integer number (2593346).

Almost surely, 2^22228620 is an apocalyptic number.

22228620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22228620 is an abundant number, since it is smaller than the sum of its proper divisors (40011684).

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

22228620 is a wasteful number, since it uses less digits than its factorization.

22228620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370489 (or 370487 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 22228620 is about 4714.7237458837. The cubic root of 22228620 is about 281.1711996523.

The spelling of 22228620 in words is "twenty-two million, two hundred twenty-eight thousand, six hundred twenty".