20242779252 has 12 divisors (see below), whose sum is σ = 47233151616. Its totient is φ = 6747593080.

The previous prime is 20242779241. The next prime is 20242779283. The reversal of 20242779252 is 25297724202.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20242779252² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843449124 + ... + 843449147.

It is an arithmetic number, because the mean of its divisors is an integer number (3936095968).

Almost surely, 2^20242779252 is an apocalyptic number.

It is an amenable number.

20242779252 is an abundant number, since it is smaller than the sum of its proper divisors (26990372364).

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

20242779252 is a wasteful number, since it uses less digits than its factorization.

20242779252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686898278 (or 1686898276 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 20242779252 in words is "twenty billion, two hundred forty-two million, seven hundred seventy-nine thousand, two hundred fifty-two".