80187198 has 128 divisors (see below), whose sum is σ = 214244352. Its totient is φ = 19408896.

The previous prime is 80187161. The next prime is 80187199. The reversal of 80187198 is 89178108.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80187199) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 491865 + ... + 492027.

It is an arithmetic number, because the mean of its divisors is an integer number (1673784).

Almost surely, 2^80187198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80187198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107122176).

80187198 is an abundant number, since it is smaller than the sum of its proper divisors (134057154).

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

80187198 is a wasteful number, since it uses less digits than its factorization.

80187198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its (nonzero) digits is 32256, while the sum is 42.

The square root of 80187198 is about 8954.7304817063. The cubic root of 80187198 is about 431.2227644215. Note that the first 3 decimals are identical.

The spelling of 80187198 in words is "eighty million, one hundred eighty-seven thousand, one hundred ninety-eight".