22310020 has 12 divisors (see below), whose sum is σ = 46851084. Its totient is φ = 8924000.

The previous prime is 22310017. The next prime is 22310021. The reversal of 22310020 is 2001322.

It can be written as a sum of positive squares in 2 ways, for example, as 3090564 + 19219456 = 1758^2 + 4384^2 .

It is a super-3 number, since 3×22310020³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22309979 and 22310006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22310021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557731 + ... + 557770.

It is an arithmetic number, because the mean of its divisors is an integer number (3904257).

Almost surely, 2^22310020 is an apocalyptic number.

22310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22310020 is an abundant number, since it is smaller than the sum of its proper divisors (24541064).

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

22310020 is a wasteful number, since it uses less digits than its factorization.

22310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115510 (or 1115508 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 22310020 is about 4723.3483885904. The cubic root of 22310020 is about 281.5139927864.

Adding to 22310020 its reverse (2001322), we get a palindrome (24311342).

The spelling of 22310020 in words is "twenty-two million, three hundred ten thousand, twenty".