20632480 has 96 divisors (see below), whose sum is σ = 56064960. Its totient is φ = 7096320.

The previous prime is 20632439. The next prime is 20632481. The reversal of 20632480 is 8423602.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20632481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33132 + ... + 33748.

It is an arithmetic number, because the mean of its divisors is an integer number (584010).

Almost surely, 2^20632480 is an apocalyptic number.

20632480 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 20632480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28032480).

20632480 is an abundant number, since it is smaller than the sum of its proper divisors (35432480).

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

20632480 is a wasteful number, since it uses less digits than its factorization.

20632480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20632480 is about 4542.2989773902. The cubic root of 20632480 is about 274.2734762232.

It can be divided in two parts, 20632 and 480, that added together give a palindrome (21112).

The spelling of 20632480 in words is "twenty million, six hundred thirty-two thousand, four hundred eighty".