20671060 has 24 divisors (see below), whose sum is σ = 44230536. Its totient is φ = 8112000.

The previous prime is 20671033. The next prime is 20671073. The reversal of 20671060 is 6017602.

20671060 = T₂₅₅ + T₂₅₆ + ... + T₅₁₉.

It can be written as a sum of positive squares in 4 ways, for example, as 3992004 + 16679056 = 1998^2 + 4084^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8691 + ... + 10810.

It is an arithmetic number, because the mean of its divisors is an integer number (1842939).

Almost surely, 2^20671060 is an apocalyptic number.

20671060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20671060 is an abundant number, since it is smaller than the sum of its proper divisors (23559476).

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

20671060 is a wasteful number, since it uses less digits than its factorization.

20671060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19563 (or 19561 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 20671060 is about 4546.5437422288. The cubic root of 20671060 is about 274.4443214510. Note that the first 3 decimals are identical.

Adding to 20671060 its reverse (6017602), we get a palindrome (26688662).

The spelling of 20671060 in words is "twenty million, six hundred seventy-one thousand, sixty".