20785050 has 288 divisors, whose sum is σ = 73120320. Its totient is φ = 4147200.

The previous prime is 20785049. The next prime is 20785057. The reversal of 20785050 is 5058702.

20785050 = 485² + 486² + ... + 560².

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20785057) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1093941 + ... + 1093959.

It is an arithmetic number, because the mean of its divisors is an integer number (253890).

Almost surely, 2^20785050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20785050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

20785050 is an abundant number, since it is smaller than the sum of its proper divisors (52335270).

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

20785050 is a wasteful number, since it uses less digits than its factorization.

20785050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 20785050 is about 4559.0624036089. The cubic root of 20785050 is about 274.9478689061.

The spelling of 20785050 in words is "twenty million, seven hundred eighty-five thousand, fifty".