20782076 has 18 divisors (see below), whose sum is σ = 42306768. Its totient is φ = 8906520.

The previous prime is 20782061. The next prime is 20782081. The reversal of 20782076 is 67028702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52820 + ... + 53211.

It is an arithmetic number, because the mean of its divisors is an integer number (2350376).

Almost surely, 2^20782076 is an apocalyptic number.

It is an amenable number.

20782076 is an abundant number, since it is smaller than the sum of its proper divisors (21524692).

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

20782076 is a wasteful number, since it uses less digits than its factorization.

20782076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106049 (or 106040 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 20782076 is about 4558.7362283861. The cubic root of 20782076 is about 274.9347547694.

The spelling of 20782076 in words is "twenty million, seven hundred eighty-two thousand, seventy-six".