22345830 has 96 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 5402880.

The previous prime is 22345789. The next prime is 22345879. The reversal of 22345830 is 3854322.

It is a super-2 number, since 2×22345830² = 998672236777800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22345794 and 22345803.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 82936 + ... + 83204.

It is an arithmetic number, because the mean of its divisors is an integer number (663390).

Almost surely, 2^22345830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22345830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31842720).

22345830 is an abundant number, since it is smaller than the sum of its proper divisors (41339610).

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

22345830 is a wasteful number, since it uses less digits than its factorization.

22345830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 22345830 is about 4727.1376117054. The cubic root of 22345830 is about 281.6645324271.

The spelling of 22345830 in words is "twenty-two million, three hundred forty-five thousand, eight hundred thirty".