20226630 has 64 divisors (see below), whose sum is σ = 51114240. Its totient is φ = 5115264.

The previous prime is 20226629. The next prime is 20226631. The reversal of 20226630 is 3662202.

It is an interprime number because it is at equal distance from previous prime (20226629) and next prime (20226631).

It is a super-2 number, since 2×20226630² = 818233122313800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20226597 and 20226606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58117 + ... + 58463.

It is an arithmetic number, because the mean of its divisors is an integer number (798660).

Almost surely, 2^20226630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20226630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25557120).

20226630 is an abundant number, since it is smaller than the sum of its proper divisors (30887610).

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

20226630 is a wasteful number, since it uses less digits than its factorization.

20226630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 20226630 is about 4497.4025837143. The cubic root of 20226630 is about 272.4631939740.

Adding to 20226630 its reverse (3662202), we get a palindrome (23888832).

The spelling of 20226630 in words is "twenty million, two hundred twenty-six thousand, six hundred thirty".