20202442620 has 24 divisors (see below), whose sum is σ = 56566839504. Its totient is φ = 5387318016.

The previous prime is 20202442571. The next prime is 20202442627. The reversal of 20202442620 is 2624420202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202442627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168353629 + ... + 168353748.

It is an arithmetic number, because the mean of its divisors is an integer number (2356951646).

Almost surely, 2^20202442620 is an apocalyptic number.

20202442620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202442620 is an abundant number, since it is smaller than the sum of its proper divisors (36364396884).

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

20202442620 is a wasteful number, since it uses less digits than its factorization.

20202442620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336707389 (or 336707387 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20202442620 its reverse (2624420202), we get a palindrome (22826862822).

The spelling of 20202442620 in words is "twenty billion, two hundred two million, four hundred forty-two thousand, six hundred twenty".