19897032 has 32 divisors (see below), whose sum is σ = 49888800. Its totient is φ = 6612864.

The previous prime is 19896997. The next prime is 19897037. The reversal of 19897032 is 23079891.

It is not an unprimeable number, because it can be changed into a prime (19897037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8803 + ... + 10829.

It is an arithmetic number, because the mean of its divisors is an integer number (1559025).

Almost surely, 2^19897032 is an apocalyptic number.

19897032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19897032 is an abundant number, since it is smaller than the sum of its proper divisors (29991768).

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

19897032 is a wasteful number, since it uses less digits than its factorization.

19897032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445 (or 2441 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 19897032 is about 4460.6089270412. The cubic root of 19897032 is about 270.9751296830.

The spelling of 19897032 in words is "nineteen million, eight hundred ninety-seven thousand, thirty-two".