19963402 has 12 divisors (see below), whose sum is σ = 31305330. Its totient is φ = 9547208.

The previous prime is 19963381. The next prime is 19963403. The reversal of 19963402 is 20436991.

It can be written as a sum of positive squares in only one way, i.e., 11431161 + 8532241 = 3381^2 + 2921^2 .

It is not an unprimeable number, because it can be changed into a prime (19963403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8377 + ... + 10492.

Almost surely, 2^19963402 is an apocalyptic number.

19963402 is a deficient number, since it is larger than the sum of its proper divisors (11341928).

19963402 is a wasteful number, since it uses less digits than its factorization.

19963402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18917 (or 18894 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 19963402 is about 4468.0423006055. The cubic root of 19963402 is about 271.2760901377.

The spelling of 19963402 in words is "nineteen million, nine hundred sixty-three thousand, four hundred two".