201622020 has 48 divisors (see below), whose sum is σ = 567725760. Its totient is φ = 53462656.

The previous prime is 201622013. The next prime is 201622027. The reversal of 201622020 is 20226102.

It is an interprime number because it is at equal distance from previous prime (201622013) and next prime (201622027).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (201622027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354 + ... + 20126.

It is an arithmetic number, because the mean of its divisors is an integer number (11827620).

Almost surely, 2^201622020 is an apocalyptic number.

201622020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201622020 is an abundant number, since it is smaller than the sum of its proper divisors (366103740).

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

201622020 is a wasteful number, since it uses less digits than its factorization.

201622020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18964 (or 18962 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201622020 is about 14199.3668872947. The cubic root of 201622020 is about 586.3802313564.

Adding to 201622020 its reverse (20226102), we get a palindrome (221848122).

The spelling of 201622020 in words is "two hundred one million, six hundred twenty-two thousand, twenty".