2021408460 has 240 divisors, whose sum is σ = 6948516960. Its totient is φ = 489646080.

The previous prime is 2021408453. The next prime is 2021408491. The reversal of 2021408460 is 648041202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 797395 + ... + 799925.

It is an arithmetic number, because the mean of its divisors is an integer number (28952154).

Almost surely, 2^2021408460 is an apocalyptic number.

2021408460 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 2021408460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3474258480).

2021408460 is an abundant number, since it is smaller than the sum of its proper divisors (4927108500).

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

2021408460 is a wasteful number, since it uses less digits than its factorization.

2021408460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598 (or 2587 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2021408460 is about 44960.0762899709. The cubic root of 2021408460 is about 1264.4005992372.

Adding to 2021408460 its reverse (648041202), we get a palindrome (2669449662).

The spelling of 2021408460 in words is "two billion, twenty-one million, four hundred eight thousand, four hundred sixty".