20695912 has 8 divisors (see below), whose sum is σ = 38804850. Its totient is φ = 10347952.

The previous prime is 20695903. The next prime is 20695949. The reversal of 20695912 is 21959602.

It can be written as a sum of positive squares in only one way, i.e., 20304036 + 391876 = 4506^2 + 626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293487 + ... + 1293502.

Almost surely, 2^20695912 is an apocalyptic number.

It is an amenable number.

20695912 is a deficient number, since it is larger than the sum of its proper divisors (18108938).

20695912 is a wasteful number, since it uses less digits than its factorization.

20695912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586995 (or 2586991 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 20695912 is about 4549.2759863521. The cubic root of 20695912 is about 274.5542619308.

The spelling of 20695912 in words is "twenty million, six hundred ninety-five thousand, nine hundred twelve".