16363998 has 32 divisors (see below), whose sum is σ = 41560320. Its totient is φ = 4675320.

The previous prime is 16363993. The next prime is 16363999. The reversal of 16363998 is 89936361.

16363998 is a `hidden beast` number, since 1 + 6 + 3 + 639 + 9 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16363993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21268 + ... + 22023.

It is an arithmetic number, because the mean of its divisors is an integer number (1298760).

Almost surely, 2^16363998 is an apocalyptic number.

16363998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16363998 is an abundant number, since it is smaller than the sum of its proper divisors (25196322).

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

16363998 is a wasteful number, since it uses less digits than its factorization.

16363998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43309 (or 43303 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 16363998 is about 4045.2438739834. The cubic root of 16363998 is about 253.8807694689.

The spelling of 16363998 in words is "sixteen million, three hundred sixty-three thousand, nine hundred ninety-eight".