20030990292 has 72 divisors (see below), whose sum is σ = 52116776712. Its totient is φ = 6482246400.

The previous prime is 20030990267. The next prime is 20030990311. The reversal of 20030990292 is 29209903002.

It can be written as a sum of positive squares in 4 ways, for example, as 5954591556 + 14076398736 = 77166^2 + 118644^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597742 + ... + 630362.

It is an arithmetic number, because the mean of its divisors is an integer number (723844121).

Almost surely, 2^20030990292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20030990292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26058388356).

20030990292 is an abundant number, since it is smaller than the sum of its proper divisors (32085786420).

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

20030990292 is a wasteful number, since it uses less digits than its factorization.

20030990292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33129 (or 33124 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The spelling of 20030990292 in words is "twenty billion, thirty million, nine hundred ninety thousand, two hundred ninety-two".