20226473280 has 896 divisors, whose sum is σ = 81984860160. Its totient is φ = 4658135040.

The previous prime is 20226473273. The next prime is 20226473291. The reversal of 20226473280 is 8237462202.

It is a happy number.

20226473280 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 647 + 3 + 2 + 8 + 0 = 666.

It is a super-2 number, since 2×20226473280² (a number of 21 digits) contains 22 as substring.

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 127 ways as a sum of consecutive naturals, for example, 128830962 + ... + 128831118.

It is an arithmetic number, because the mean of its divisors is an integer number (91500960).

Almost surely, 2^20226473280 is an apocalyptic number.

20226473280 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 20226473280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40992430080).

20226473280 is an abundant number, since it is smaller than the sum of its proper divisors (61758386880).

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

20226473280 is a wasteful number, since it uses less digits than its factorization.

20226473280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 20226473280 in words is "twenty billion, two hundred twenty-six million, four hundred seventy-three thousand, two hundred eighty".