19765012 has 6 divisors (see below), whose sum is σ = 34588778. Its totient is φ = 9882504.

The previous prime is 19764989. The next prime is 19765013. The reversal of 19765012 is 21056791.

It can be written as a sum of positive squares in only one way, i.e., 19749136 + 15876 = 4444^2 + 126^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19765013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2470623 + ... + 2470630.

Almost surely, 2^19765012 is an apocalyptic number.

It is an amenable number.

19765012 is a deficient number, since it is larger than the sum of its proper divisors (14823766).

19765012 is a wasteful number, since it uses less digits than its factorization.

19765012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4941257 (or 4941255 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 19765012 is about 4445.7858697873. The cubic root of 19765012 is about 270.3744780891.

The spelling of 19765012 in words is "nineteen million, seven hundred sixty-five thousand, twelve".