20365760 has 56 divisors (see below), whose sum is σ = 50084736. Its totient is φ = 7879680.

The previous prime is 20365753. The next prime is 20365769. The reversal of 20365760 is 6756302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20365769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8894 + ... + 10946.

Almost surely, 2^20365760 is an apocalyptic number.

20365760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20365760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25042368).

20365760 is an abundant number, since it is smaller than the sum of its proper divisors (29718976).

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

20365760 is a wasteful number, since it uses less digits than its factorization.

20365760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 20365760 is about 4512.8438927133. The cubic root of 20365760 is about 273.0864847847.

The spelling of 20365760 in words is "twenty million, three hundred sixty-five thousand, seven hundred sixty".