20892453384 has 96 divisors (see below), whose sum is σ = 57920052960. Its totient is φ = 6274920960.

The previous prime is 20892453377. The next prime is 20892453419. The reversal of 20892453384 is 48335429802.

It is a super-2 number, since 2×20892453384² (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 23 ways as a sum of consecutive naturals, for example, 296319 + ... + 359985.

It is an arithmetic number, because the mean of its divisors is an integer number (603333885).

Almost surely, 2^20892453384 is an apocalyptic number.

20892453384 is a gapful number since it is divisible by the number (24) 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 20892453384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28960026480).

20892453384 is an abundant number, since it is smaller than the sum of its proper divisors (37027599576).

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

20892453384 is a wasteful number, since it uses less digits than its factorization.

20892453384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63811 (or 63796 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 20892453384 in words is "twenty billion, eight hundred ninety-two million, four hundred fifty-three thousand, three hundred eighty-four".