20743060 has 108 divisors (see below), whose sum is σ = 52710588. Its totient is φ = 6829056.

The previous prime is 20743039. The next prime is 20743081. The reversal of 20743060 is 6034702.

It is an interprime number because it is at equal distance from previous prime (20743039) and next prime (20743081).

It can be written as a sum of positive squares in 6 ways, for example, as 1976836 + 18766224 = 1406^2 + 4332^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1091731 + ... + 1091749.

It is an arithmetic number, because the mean of its divisors is an integer number (488061).

Almost surely, 2^20743060 is an apocalyptic number.

20743060 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 20743060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26355294).

20743060 is an abundant number, since it is smaller than the sum of its proper divisors (31967528).

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

20743060 is a wasteful number, since it uses less digits than its factorization.

20743060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 20743060 is about 4554.4549619027. The cubic root of 20743060 is about 274.7625940058.

Adding to 20743060 its reverse (6034702), we get a palindrome (26777762).

The spelling of 20743060 in words is "twenty million, seven hundred forty-three thousand, sixty".