20723060 has 12 divisors (see below), whose sum is σ = 43518468. Its totient is φ = 8289216.

The previous prime is 20723047. The next prime is 20723063. The reversal of 20723060 is 6032702.

It can be written as a sum of positive squares in 2 ways, for example, as 5262436 + 15460624 = 2294^2 + 3932^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1036153 = 20723060 / (2 + 0 + 7 + 2 + 3 + 0 + 6 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20723063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518057 + ... + 518096.

It is an arithmetic number, because the mean of its divisors is an integer number (3626539).

Almost surely, 2^20723060 is an apocalyptic number.

20723060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20723060 is an abundant number, since it is smaller than the sum of its proper divisors (22795408).

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

20723060 is a wasteful number, since it uses less digits than its factorization.

20723060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036162 (or 1036160 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20723060 is about 4552.2587799904. The cubic root of 20723060 is about 274.6742589359.

Adding to 20723060 its reverse (6032702), we get a palindrome (26755762).

The spelling of 20723060 in words is "twenty million, seven hundred twenty-three thousand, sixty".