20774632 has 16 divisors (see below), whose sum is σ = 39487140. Its totient is φ = 10244736.

The previous prime is 20774627. The next prime is 20774639. The reversal of 20774632 is 23647702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20304036 + 470596 = 4506^2 + 686^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20774594 and 20774603.

It is not an unprimeable number, because it can be changed into a prime (20774639) 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, 17203 + ... + 18370.

Almost surely, 2^20774632 is an apocalyptic number.

It is an amenable number.

20774632 is a deficient number, since it is larger than the sum of its proper divisors (18712508).

20774632 is a wasteful number, since it uses less digits than its factorization.

20774632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35652 (or 35648 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 20774632 is about 4557.9197009162. The cubic root of 20774632 is about 274.9019242552.

The spelling of 20774632 in words is "twenty million, seven hundred seventy-four thousand, six hundred thirty-two".