20273304 has 64 divisors (see below), whose sum is σ = 55699200. Its totient is φ = 6120576.

The previous prime is 20273303. The next prime is 20273321. The reversal of 20273304 is 40337202.

It is a happy number.

It is a super-2 number, since 2×20273304² = 822013710152832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20273303) by changing a digit.

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, 9522 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (870300).

Almost surely, 2^20273304 is an apocalyptic number.

20273304 is a gapful number since it is divisible by the number (24) 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 20273304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27849600).

20273304 is an abundant number, since it is smaller than the sum of its proper divisors (35425896).

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

20273304 is a wasteful number, since it uses less digits than its factorization.

20273304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984 (or 1980 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 20273304 is about 4502.5885888009. The cubic root of 20273304 is about 272.6726073062.

The spelling of 20273304 in words is "twenty million, two hundred seventy-three thousand, three hundred four".