20795730 has 64 divisors (see below), whose sum is σ = 52531200. Its totient is φ = 5261760.

The previous prime is 20795717. The next prime is 20795759. The reversal of 20795730 is 3759702.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20795691 and 20795700.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54681 + ... + 55059.

It is an arithmetic number, because the mean of its divisors is an integer number (820800).

Almost surely, 2^20795730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20795730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26265600).

20795730 is an abundant number, since it is smaller than the sum of its proper divisors (31735470).

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

20795730 is a wasteful number, since it uses less digits than its factorization.

20795730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 20795730 is about 4560.2335466509. The cubic root of 20795730 is about 274.9949530754.

The spelling of 20795730 in words is "twenty million, seven hundred ninety-five thousand, seven hundred thirty".