19890332 has 24 divisors (see below), whose sum is σ = 43397760. Its totient is φ = 7749360.

The previous prime is 19890307. The next prime is 19890341. The reversal of 19890332 is 23309891.

It is a junction number, because it is equal to n+sod(n) for n = 19890292 and 19890301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31982 + ... + 32597.

It is an arithmetic number, because the mean of its divisors is an integer number (1808240).

Almost surely, 2^19890332 is an apocalyptic number.

It is an amenable number.

19890332 is an abundant number, since it is smaller than the sum of its proper divisors (23507428).

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

19890332 is a wasteful number, since it uses less digits than its factorization.

19890332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64601 (or 64599 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 19890332 is about 4459.8578452682. The cubic root of 19890332 is about 270.9447107879.

The spelling of 19890332 in words is "nineteen million, eight hundred ninety thousand, three hundred thirty-two".