21280482384 has 160 divisors (see below), whose sum is σ = 63926194176. Its totient is φ = 5974456320.

The previous prime is 21280482367. The next prime is 21280482407. The reversal of 21280482384 is 48328408212.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8038149 + ... + 8040795.

Almost surely, 2^21280482384 is an apocalyptic number.

21280482384 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 21280482384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31963097088).

21280482384 is an abundant number, since it is smaller than the sum of its proper divisors (42645711792).

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

21280482384 is a wasteful number, since it uses less digits than its factorization.

21280482384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073 (or 3067 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The spelling of 21280482384 in words is "twenty-one billion, two hundred eighty million, four hundred eighty-two thousand, three hundred eighty-four".