22420152 has 96 divisors (see below), whose sum is σ = 66393600. Its totient is φ = 7068384.

The previous prime is 22420141. The next prime is 22420159. The reversal of 22420152 is 25102422.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36633 + ... + 37239.

It is an arithmetic number, because the mean of its divisors is an integer number (691600).

Almost surely, 2^22420152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22420152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33196800).

22420152 is an abundant number, since it is smaller than the sum of its proper divisors (43973448).

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

22420152 is a wasteful number, since it uses less digits than its factorization.

With its successor (22420153) it forms an eRAP, since the sums of their prime factors are consecutive (647 and 648).

22420152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22420152 is about 4734.9922914404. The cubic root of 22420152 is about 281.9764579713.

Adding to 22420152 its reverse (25102422), we get a palindrome (47522574).

The spelling of 22420152 in words is "twenty-two million, four hundred twenty thousand, one hundred fifty-two".