20794284 has 144 divisors (see below), whose sum is σ = 65345280. Its totient is φ = 5443200.

The previous prime is 20794283. The next prime is 20794289. The reversal of 20794284 is 48249702.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20794283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 205834 + ... + 205934.

Almost surely, 2^20794284 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 20794284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32672640).

20794284 is an abundant number, since it is smaller than the sum of its proper divisors (44550996).

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

20794284 is a wasteful number, since it uses less digits than its factorization.

20794284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20794284 is about 4560.0749993832. The cubic root of 20794284 is about 274.9885791400.

The spelling of 20794284 in words is "twenty million, seven hundred ninety-four thousand, two hundred eighty-four".