20274744 has 128 divisors (see below), whose sum is σ = 63590400. Its totient is φ = 5253120.

The previous prime is 20274733. The next prime is 20274769. The reversal of 20274744 is 44747202.

It is a super-2 number, since 2×20274744² = 822130488531072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88422 + ... + 88650.

It is an arithmetic number, because the mean of its divisors is an integer number (496800).

Almost surely, 2^20274744 is an apocalyptic number.

20274744 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 20274744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31795200).

20274744 is an abundant number, since it is smaller than the sum of its proper divisors (43315656).

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

20274744 is a wasteful number, since it uses less digits than its factorization.

20274744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 20274744 is about 4502.7484939757. The cubic root of 20274744 is about 272.6790630745.

The spelling of 20274744 in words is "twenty million, two hundred seventy-four thousand, seven hundred forty-four".