20774312 has 16 divisors (see below), whose sum is σ = 41948340. Its totient is φ = 9588096.

The previous prime is 20774293. The next prime is 20774317. The reversal of 20774312 is 21347702.

It can be written as a sum of positive squares in 2 ways, for example, as 20557156 + 217156 = 4534^2 + 466^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20774317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99773 + ... + 99980.

Almost surely, 2^20774312 is an apocalyptic number.

It is an amenable number.

20774312 is an abundant number, since it is smaller than the sum of its proper divisors (21174028).

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

20774312 is a wasteful number, since it uses less digits than its factorization.

20774312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199772 (or 199768 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20774312 is about 4557.8845970472. The cubic root of 20774312 is about 274.9005127730.

The spelling of 20774312 in words is "twenty million, seven hundred seventy-four thousand, three hundred twelve".