20273856 has 56 divisors (see below), whose sum is σ = 55985664. Its totient is φ = 6462720.

The previous prime is 20273821. The next prime is 20273863. The reversal of 20273856 is 65837202.

It is a super-2 number, since 2×20273856² = 822058474217472, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2121 + ... + 6711.

It is an arithmetic number, because the mean of its divisors is an integer number (999744).

Almost surely, 2^20273856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20273856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27992832).

20273856 is an abundant number, since it is smaller than the sum of its proper divisors (35711808).

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

20273856 is a wasteful number, since it uses less digits than its factorization.

20273856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629 (or 4619 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20273856 is about 4502.6498864558. The cubic root of 20273856 is about 272.6750820535.

The spelling of 20273856 in words is "twenty million, two hundred seventy-three thousand, eight hundred fifty-six".