20483040 has 96 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 5405184.

The previous prime is 20483009. The next prime is 20483053. The reversal of 20483040 is 4038402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 20482998 and 20483016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66567 + ... + 66873.

It is an arithmetic number, because the mean of its divisors is an integer number (679140).

Almost surely, 2^20483040 is an apocalyptic number.

20483040 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 20483040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32598720).

20483040 is an abundant number, since it is smaller than the sum of its proper divisors (44714400).

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

20483040 is a wasteful number, since it uses less digits than its factorization.

20483040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20483040 is about 4525.8192628518. The cubic root of 20483040 is about 273.6096881081.

The spelling of 20483040 in words is "twenty million, four hundred eighty-three thousand, forty".