20777012 has 12 divisors (see below), whose sum is σ = 36735300. Its totient is φ = 10281216.

The previous prime is 20776997. The next prime is 20777023. The reversal of 20777012 is 21077702.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 17522596 = 1804^2 + 4186^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26387 + ... + 27162.

It is an arithmetic number, because the mean of its divisors is an integer number (3061275).

Almost surely, 2^20777012 is an apocalyptic number.

It is an amenable number.

20777012 is a deficient number, since it is larger than the sum of its proper divisors (15958288).

20777012 is a wasteful number, since it uses less digits than its factorization.

20777012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53650 (or 53648 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 26.

The square root of 20777012 is about 4558.1807774594. The cubic root of 20777012 is about 274.9124216990.

The spelling of 20777012 in words is "twenty million, seven hundred seventy-seven thousand, twelve".