202022420 has 48 divisors (see below), whose sum is σ = 434911680. Its totient is φ = 78802944.

The previous prime is 202022399. The next prime is 202022467. The reversal of 202022420 is 24220202.

It is a junction number, because it is equal to n+sod(n) for n = 202022395 and 202022404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142676 + ... + 144084.

It is an arithmetic number, because the mean of its divisors is an integer number (9060660).

Almost surely, 2^202022420 is an apocalyptic number.

202022420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202022420 is an abundant number, since it is smaller than the sum of its proper divisors (232889260).

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

202022420 is a wasteful number, since it uses less digits than its factorization.

202022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592 (or 1590 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 202022420 is about 14213.4591145154. The cubic root of 202022420 is about 586.7681377227.

Adding to 202022420 its reverse (24220202), we get a palindrome (226242622).

It can be divided in two parts, 20202 and 2420, that added together give a palindrome (22622).

The spelling of 202022420 in words is "two hundred two million, twenty-two thousand, four hundred twenty".