20254320 has 80 divisors (see below), whose sum is σ = 69772320. Its totient is φ = 5400576.

The previous prime is 20254319. The next prime is 20254331. The reversal of 20254320 is 2345202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20254293 and 20254302.

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, 2529 + ... + 6848.

It is an arithmetic number, because the mean of its divisors is an integer number (872154).

Almost surely, 2^20254320 is an apocalyptic number.

20254320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20254320 is an abundant number, since it is smaller than the sum of its proper divisors (49518000).

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

20254320 is a wasteful number, since it uses less digits than its factorization.

20254320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399 (or 9387 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20254320 is about 4500.4799744027. The cubic root of 20254320 is about 272.5874701663.

Adding to 20254320 its reverse (2345202), we get a palindrome (22599522).

The spelling of 20254320 in words is "twenty million, two hundred fifty-four thousand, three hundred twenty".