20481614240 has 96 divisors (see below), whose sum is σ = 50762194560. Its totient is φ = 7798604800.

The previous prime is 20481614221. The next prime is 20481614249. The reversal of 20481614240 is 4241618402.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 20481614197 and 20481614206.

It is not an unprimeable number, because it can be changed into a prime (20481614249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298355 + ... + 360525.

It is an arithmetic number, because the mean of its divisors is an integer number (528772860).

Almost surely, 2^20481614240 is an apocalyptic number.

20481614240 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 20481614240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25381097280).

20481614240 is an abundant number, since it is smaller than the sum of its proper divisors (30280580320).

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

20481614240 is a wasteful number, since it uses less digits than its factorization.

20481614240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62286 (or 62278 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 20481614240 in words is "twenty billion, four hundred eighty-one million, six hundred fourteen thousand, two hundred forty".