22301620 has 96 divisors (see below), whose sum is σ = 55520640. Its totient is φ = 7434240.

The previous prime is 22301599. The next prime is 22301647. The reversal of 22301620 is 2610322.

It is a junction number, because it is equal to n+sod(n) for n = 22301594 and 22301603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250536 + ... + 250624.

It is an arithmetic number, because the mean of its divisors is an integer number (578340).

Almost surely, 2^22301620 is an apocalyptic number.

22301620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22301620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27760320).

22301620 is an abundant number, since it is smaller than the sum of its proper divisors (33219020).

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

22301620 is a wasteful number, since it uses less digits than its factorization.

22301620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 22301620 is about 4722.4591051697. The cubic root of 22301620 is about 281.4786571782.

Adding to 22301620 its reverse (2610322), we get a palindrome (24911942).

The spelling of 22301620 in words is "twenty-two million, three hundred one thousand, six hundred twenty".