20442286692 has 36 divisors (see below), whose sum is σ = 51680410236. Its totient is φ = 6813192000.

The previous prime is 20442286691. The next prime is 20442286703. The reversal of 20442286692 is 29668224402.

It can be written as a sum of positive squares in 2 ways, for example, as 2905641216 + 17536645476 = 53904^2 + 132426^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (20442286691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272638 + ... + 339434.

It is an arithmetic number, because the mean of its divisors is an integer number (1435566951).

Almost surely, 2^20442286692 is an apocalyptic number.

It is an amenable number.

20442286692 is an abundant number, since it is smaller than the sum of its proper divisors (31238123544).

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

20442286692 is a wasteful number, since it uses less digits than its factorization.

20442286692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75308 (or 75303 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 20442286692 in words is "twenty billion, four hundred forty-two million, two hundred eighty-six thousand, six hundred ninety-two".