22358420 has 48 divisors (see below), whose sum is σ = 55520640. Its totient is φ = 7400064.

The previous prime is 22358411. The next prime is 22358423. The reversal of 22358420 is 2485322.

22358420 is nontrivially palindromic in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 22358420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22358423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1307 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (1156680).

Almost surely, 2^22358420 is an apocalyptic number.

22358420 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 22358420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27760320).

22358420 is an abundant number, since it is smaller than the sum of its proper divisors (33162220).

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

22358420 is a wasteful number, since it uses less digits than its factorization.

22358420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552 (or 5550 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 22358420 is about 4728.4690968642. The cubic root of 22358420 is about 281.7174206048.

The spelling of 22358420 in words is "twenty-two million, three hundred fifty-eight thousand, four hundred twenty".