20383073280 has 616 divisors, whose sum is σ = 75605240832. Its totient is φ = 5267275776.

The previous prime is 20383073267. The next prime is 20383073281. The reversal of 20383073280 is 8237038302.

20383073280 is a `hidden beast` number, since 20 + 3 + 8 + 307 + 328 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20383073281) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 160496577 + ... + 160496703.

Almost surely, 2^20383073280 is an apocalyptic number.

20383073280 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 20383073280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37802620416).

20383073280 is an abundant number, since it is smaller than the sum of its proper divisors (55222167552).

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

20383073280 is an equidigital number, since it uses as much as digits as its factorization.

20383073280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 20383073280 in words is "twenty billion, three hundred eighty-three million, seventy-three thousand, two hundred eighty".