20284930680 has 64 divisors (see below), whose sum is σ = 69548336640. Its totient is φ = 4636555392.

The previous prime is 20284930663. The next prime is 20284930703. The reversal of 20284930680 is 8603948202.

It is a super-3 number, since 3×20284930680³ (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 (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12073524 + ... + 12075203.

It is an arithmetic number, because the mean of its divisors is an integer number (1086692760).

Almost surely, 2^20284930680 is an apocalyptic number.

20284930680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20284930680 is an abundant number, since it is smaller than the sum of its proper divisors (49263405960).

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

20284930680 is a wasteful number, since it uses less digits than its factorization.

20284930680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24148748 (or 24148744 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 20284930680 in words is "twenty billion, two hundred eighty-four million, nine hundred thirty thousand, six hundred eighty".