16998432 has 48 divisors (see below), whose sum is σ = 48680352. Its totient is φ = 5150720.

The previous prime is 16998409. The next prime is 16998439. The reversal of 16998432 is 23489961.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (16998439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6993 + ... + 9104.

It is an arithmetic number, because the mean of its divisors is an integer number (1014174).

Almost surely, 2^16998432 is an apocalyptic number.

16998432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16998432 is an abundant number, since it is smaller than the sum of its proper divisors (31681920).

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

16998432 is a wasteful number, since it uses less digits than its factorization.

16998432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16121 (or 16113 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 16998432 is about 4122.9154733028. The cubic root of 16998432 is about 257.1202533923.

The spelling of 16998432 in words is "sixteen million, nine hundred ninety-eight thousand, four hundred thirty-two".