16445898 has 24 divisors (see below), whose sum is σ = 40723488. Its totient is φ = 4698792.

The previous prime is 16445893. The next prime is 16445969. The reversal of 16445898 is 89854461.

16445898 is a `hidden beast` number, since 1 + 64 + 4 + 589 + 8 = 666.

It is a super-2 number, since 2×16445898² = 540935122052808, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16445893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65136 + ... + 65387.

It is an arithmetic number, because the mean of its divisors is an integer number (1696812).

Almost surely, 2^16445898 is an apocalyptic number.

16445898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16445898 is an abundant number, since it is smaller than the sum of its proper divisors (24277590).

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

16445898 is a wasteful number, since it uses less digits than its factorization.

16445898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130538 (or 130535 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 16445898 is about 4055.3542385345. The cubic root of 16445898 is about 254.3036132128.

The spelling of 16445898 in words is "sixteen million, four hundred forty-five thousand, eight hundred ninety-eight".