22755420 has 72 divisors (see below), whose sum is σ = 69529824. Its totient is φ = 6023808.

The previous prime is 22755419. The next prime is 22755427. The reversal of 22755420 is 2455722.

It is a super-3 number, since 3×22755420³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22755427) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 29682 + ... + 30438.

It is an arithmetic number, because the mean of its divisors is an integer number (965692).

Almost surely, 2^22755420 is an apocalyptic number.

22755420 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 22755420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34764912).

22755420 is an abundant number, since it is smaller than the sum of its proper divisors (46774404).

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

22755420 is a wasteful number, since it uses less digits than its factorization.

22755420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 22755420 is about 4770.2641436298. The cubic root of 22755420 is about 283.3750557551.

The spelling of 22755420 in words is "twenty-two million, seven hundred fifty-five thousand, four hundred twenty".