20862612 has 18 divisors (see below), whose sum is σ = 52736138. Its totient is φ = 6954192.

The previous prime is 20862607. The next prime is 20862617. The reversal of 20862612 is 21626802.

20862612 is a `hidden beast` number, since 20 + 8 + 626 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (20862607) and next prime (20862617).

It can be written as a sum of positive squares in only one way, i.e., 18974736 + 1887876 = 4356^2 + 1374^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20862617) 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 5 ways as a sum of consecutive naturals, for example, 289723 + ... + 289794.

Almost surely, 2^20862612 is an apocalyptic number.

It is an amenable number.

20862612 is an abundant number, since it is smaller than the sum of its proper divisors (31873526).

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

20862612 is a wasteful number, since it uses less digits than its factorization.

20862612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579527 (or 579522 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20862612 is about 4567.5608370333. The cubic root of 20862612 is about 275.2894451064.

The spelling of 20862612 in words is "twenty million, eight hundred sixty-two thousand, six hundred twelve".