20726760 has 64 divisors (see below), whose sum is σ = 62959680. Its totient is φ = 5457920.

The previous prime is 20726753. The next prime is 20726773. The reversal of 20726760 is 6762702.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8920 + ... + 11000.

It is an arithmetic number, because the mean of its divisors is an integer number (983745).

Almost surely, 2^20726760 is an apocalyptic number.

20726760 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 20726760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31479840).

20726760 is an abundant number, since it is smaller than the sum of its proper divisors (42232920).

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

20726760 is a wasteful number, since it uses less digits than its factorization.

20726760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2174 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 20726760 is about 4552.6651535117. The cubic root of 20726760 is about 274.6906052072.

The spelling of 20726760 in words is "twenty million, seven hundred twenty-six thousand, seven hundred sixty".