22435020 has 72 divisors (see below), whose sum is σ = 68717376. Its totient is φ = 5924352.

The previous prime is 22435013. The next prime is 22435037. The reversal of 22435020 is 2053422.

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

It is a junction number, because it is equal to n+sod(n) for n = 22434984 and 22435002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19789 + ... + 20891.

It is an arithmetic number, because the mean of its divisors is an integer number (954408).

Almost surely, 2^22435020 is an apocalyptic number.

22435020 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 22435020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34358688).

22435020 is an abundant number, since it is smaller than the sum of its proper divisors (46282356).

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

22435020 is a wasteful number, since it uses less digits than its factorization.

22435020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22435020 is about 4736.5620443524. The cubic root of 22435020 is about 282.0387754135.

Adding to 22435020 its reverse (2053422), we get a palindrome (24488442).

The spelling of 22435020 in words is "twenty-two million, four hundred thirty-five thousand, twenty".