20486690280 has 384 divisors, whose sum is σ = 78073632000. Its totient is φ = 4656960000.

The previous prime is 20486690239. The next prime is 20486690291. The reversal of 20486690280 is 8209668402.

20486690280 is a `hidden beast` number, since 2 + 0 + 486 + 6 + 90 + 2 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 30993150 + ... + 30993810.

It is an arithmetic number, because the mean of its divisors is an integer number (203316750).

Almost surely, 2^20486690280 is an apocalyptic number.

20486690280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20486690280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39036816000).

20486690280 is an abundant number, since it is smaller than the sum of its proper divisors (57586941720).

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

20486690280 is a wasteful number, since it uses less digits than its factorization.

20486690280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 20486690280 in words is "twenty billion, four hundred eighty-six million, six hundred ninety thousand, two hundred eighty".