19888002 has 12 divisors (see below), whose sum is σ = 43090710. Its totient is φ = 6629328.

The previous prime is 19887979. The next prime is 19888021. The reversal of 19888002 is 20088891.

It can be written as a sum of positive squares in only one way, i.e., 15515721 + 4372281 = 3939^2 + 2091^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552427 + ... + 552462.

Almost surely, 2^19888002 is an apocalyptic number.

19888002 is an abundant number, since it is smaller than the sum of its proper divisors (23202708).

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

19888002 is a wasteful number, since it uses less digits than its factorization.

19888002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104897 (or 1104894 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 19888002 is about 4459.5966185295. The cubic root of 19888002 is about 270.9341306757.

The spelling of 19888002 in words is "nineteen million, eight hundred eighty-eight thousand, two".