16051998 has 32 divisors (see below), whose sum is σ = 34070400. Its totient is φ = 5027616.

The previous prime is 16051991. The next prime is 16052027. The reversal of 16051998 is 89915061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16051991) 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, 15340 + ... + 16352.

It is an arithmetic number, because the mean of its divisors is an integer number (1064700).

Almost surely, 2^16051998 is an apocalyptic number.

16051998 is an abundant number, since it is smaller than the sum of its proper divisors (18018402).

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

16051998 is a wasteful number, since it uses less digits than its factorization.

16051998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 16051998 is about 4006.4944777199. The cubic root of 16051998 is about 252.2568871978.

The spelling of 16051998 in words is "sixteen million, fifty-one thousand, nine hundred ninety-eight".