20702974032 has 480 divisors, whose sum is σ = 68083864576. Its totient is φ = 6046617600.

The previous prime is 20702974021. The next prime is 20702974069. The reversal of 20702974032 is 23047920702.

It is a super-3 number, since 3×20702974032³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 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 95 ways as a sum of consecutive naturals, for example, 114380982 + ... + 114381162.

Almost surely, 2^20702974032 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 20702974032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34041932288).

20702974032 is an abundant number, since it is smaller than the sum of its proper divisors (47380890544).

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

20702974032 is a wasteful number, since it uses less digits than its factorization.

20702974032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The spelling of 20702974032 in words is "twenty billion, seven hundred two million, nine hundred seventy-four thousand, thirty-two".