22222830 has 128 divisors (see below), whose sum is σ = 65691648. Its totient is φ = 4701312.

The previous prime is 22222819. The next prime is 22222831. The reversal of 22222830 is 3822222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 22222797 and 22222806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 207637 + ... + 207743.

It is an arithmetic number, because the mean of its divisors is an integer number (513216).

Almost surely, 2^22222830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22222830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32845824).

22222830 is an abundant number, since it is smaller than the sum of its proper divisors (43468818).

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

22222830 is a wasteful number, since it uses less digits than its factorization.

22222830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 22222830 is about 4714.1096720378. The cubic root of 22222830 is about 281.1467848420.

The spelling of 22222830 in words is "twenty-two million, two hundred twenty-two thousand, eight hundred thirty".