20220650 has 24 divisors (see below), whose sum is σ = 39824460. Its totient is φ = 7612160.

The previous prime is 20220647. The next prime is 20220653. The reversal of 20220650 is 5602202.

It is an interprime number because it is at equal distance from previous prime (20220647) and next prime (20220653).

It can be written as a sum of positive squares in 6 ways, for example, as 6744409 + 13476241 = 2597^2 + 3671^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (20220653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11045 + ... + 12744.

Almost surely, 2^20220650 is an apocalyptic number.

20220650 is a deficient number, since it is larger than the sum of its proper divisors (19603810).

20220650 is a wasteful number, since it uses less digits than its factorization.

20220650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23818 (or 23813 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20220650 is about 4496.7377063823. The cubic root of 20220650 is about 272.4363400938.

Adding to 20220650 its reverse (5602202), we get a palindrome (25822852).

The spelling of 20220650 in words is "twenty million, two hundred twenty thousand, six hundred fifty".