20280682820 has 24 divisors (see below), whose sum is σ = 43189288128. Its totient is φ = 7998015200.

The previous prime is 20280682813. The next prime is 20280682843. The reversal of 20280682820 is 2828608202.

It is a super-2 number, since 2×20280682820² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7139666 + ... + 7142505.

It is an arithmetic number, because the mean of its divisors is an integer number (1799553672).

Almost surely, 2^20280682820 is an apocalyptic number.

20280682820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20280682820 is an abundant number, since it is smaller than the sum of its proper divisors (22908605308).

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

20280682820 is a wasteful number, since it uses less digits than its factorization.

20280682820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14282251 (or 14282249 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 20280682820 in words is "twenty billion, two hundred eighty million, six hundred eighty-two thousand, eight hundred twenty".