20460480 has 56 divisors (see below), whose sum is σ = 64965072. Its totient is φ = 5455872.

The previous prime is 20460467. The next prime is 20460523. The reversal of 20460480 is 8406402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20460480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9697 + ... + 11616.

Almost surely, 2^20460480 is an apocalyptic number.

20460480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20460480 is an abundant number, since it is smaller than the sum of its proper divisors (44504592).

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

20460480 is a wasteful number, since it uses less digits than its factorization.

20460480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21333 (or 21323 counting only the distinct ones).

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

The square root of 20460480 is about 4523.3262097709. The cubic root of 20460480 is about 273.5092000599.

Adding to 20460480 its reverse (8406402), we get a palindrome (28866882).

The spelling of 20460480 in words is "twenty million, four hundred sixty thousand, four hundred eighty".