20480460 has 288 divisors, whose sum is σ = 80080896. Its totient is φ = 3801600.

The previous prime is 20480431. The next prime is 20480479. The reversal of 20480460 is 6408402.

It is a self number, because there is not a number n which added to its sum of digits gives 20480460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 660645 + ... + 660675.

Almost surely, 2^20480460 is an apocalyptic number.

20480460 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 20480460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40040448).

20480460 is an abundant number, since it is smaller than the sum of its proper divisors (59600436).

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

20480460 is a wasteful number, since it uses less digits than its factorization.

20480460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20480460 is about 4525.5342226084. The cubic root of 20480460 is about 273.5981998616.

Adding to 20480460 its reverse (6408402), we get a palindrome (26888862).

The spelling of 20480460 in words is "twenty million, four hundred eighty thousand, four hundred sixty".