20873527290 has 480 divisors, whose sum is σ = 71391790080. Its totient is φ = 4139942400.

The previous prime is 20873527289. The next prime is 20873527327. The reversal of 20873527290 is 9272537802.

20873527290 is a `hidden beast` number, since 2 + 0 + 8 + 7 + 352 + 7 + 290 = 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 239 ways as a sum of consecutive naturals, for example, 285938694 + ... + 285938766.

It is an arithmetic number, because the mean of its divisors is an integer number (148732896).

Almost surely, 2^20873527290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20873527290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35695895040).

20873527290 is an abundant number, since it is smaller than the sum of its proper divisors (50518262790).

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

20873527290 is a wasteful number, since it uses less digits than its factorization.

20873527290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 20873527290 in words is "twenty billion, eight hundred seventy-three million, five hundred twenty-seven thousand, two hundred ninety".