20761012 has 24 divisors (see below), whose sum is σ = 38835720. Its totient is φ = 9676800.

The previous prime is 20761009. The next prime is 20761021. The reversal of 20761012 is 21016702.

It can be written as a sum of positive squares in 4 ways, for example, as 7540516 + 13220496 = 2746^2 + 3636^2 .

It is a super-3 number, since 3×20761012³ (a number of 23 digits) contains 333 as substring.

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, 6012 + ... + 8812.

It is an arithmetic number, because the mean of its divisors is an integer number (1618155).

Almost surely, 2^20761012 is an apocalyptic number.

It is an amenable number.

20761012 is a deficient number, since it is larger than the sum of its proper divisors (18074708).

20761012 is a wasteful number, since it uses less digits than its factorization.

20761012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 20761012 is about 4556.4253532786. The cubic root of 20761012 is about 274.8418352206.

Adding to 20761012 its reverse (21016702), we get a palindrome (41777714).

The spelling of 20761012 in words is "twenty million, seven hundred sixty-one thousand, twelve".