202642220 has 48 divisors (see below), whose sum is σ = 488678400. Its totient is φ = 69808320.

The previous prime is 202642211. The next prime is 202642243. The reversal of 202642220 is 22246202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 202642192 and 202642201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20060 + ... + 28419.

It is an arithmetic number, because the mean of its divisors is an integer number (10180800).

Almost surely, 2^202642220 is an apocalyptic number.

202642220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202642220 is an abundant number, since it is smaller than the sum of its proper divisors (286036180).

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

202642220 is a wasteful number, since it uses less digits than its factorization.

202642220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48518 (or 48516 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 202642220 is about 14235.2456951048. The cubic root of 202642220 is about 587.3675886895.

Adding to 202642220 its reverse (22246202), we get a palindrome (224888422).

The spelling of 202642220 in words is "two hundred two million, six hundred forty-two thousand, two hundred twenty".