20774304 has 72 divisors (see below), whose sum is σ = 60235812. Its totient is φ = 6789120.

The previous prime is 20774293. The next prime is 20774317. The reversal of 20774304 is 40347702.

It can be written as a sum of positive squares in 2 ways, for example, as 20684304 + 90000 = 4548^2 + 300^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14584 + ... + 15944.

Almost surely, 2^20774304 is an apocalyptic number.

20774304 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 20774304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30117906).

20774304 is an abundant number, since it is smaller than the sum of its proper divisors (39461508).

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

20774304 is a wasteful number, since it uses less digits than its factorization.

20774304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20774304 is about 4557.8837194470. The cubic root of 20774304 is about 274.9004774858.

The spelling of 20774304 in words is "twenty million, seven hundred seventy-four thousand, three hundred four".