20706033492 has 72 divisors (see below), whose sum is σ = 53992676192. Its totient is φ = 6687489600.

The previous prime is 20706033457. The next prime is 20706033497. The reversal of 20706033492 is 29433060702.

It is a happy number.

20706033492 is a `hidden beast` number, since 2 + 0 + 7 + 0 + 603 + 3 + 49 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20706033497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76767 + ... + 217497.

Almost surely, 2^20706033492 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 20706033492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26996338096).

20706033492 is an abundant number, since it is smaller than the sum of its proper divisors (33286642700).

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

20706033492 is a wasteful number, since it uses less digits than its factorization.

20706033492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140869 (or 140864 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 20706033492 in words is "twenty billion, seven hundred six million, thirty-three thousand, four hundred ninety-two".