80638998 has 48 divisors (see below), whose sum is σ = 183042048. Its totient is φ = 23641200.

The previous prime is 80638997. The next prime is 80639003. The reversal of 80638998 is 89983608.

It is a self number, because there is not a number n which added to its sum of digits gives 80638998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80638997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20715 + ... + 24297.

It is an arithmetic number, because the mean of its divisors is an integer number (3813376).

Almost surely, 2^80638998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80638998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91521024).

80638998 is an abundant number, since it is smaller than the sum of its proper divisors (102403050).

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

80638998 is a wasteful number, since it uses less digits than its factorization.

80638998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641 (or 3630 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 80638998 is about 8979.9219372999. The cubic root of 80638998 is about 432.0311298726.

The spelling of 80638998 in words is "eighty million, six hundred thirty-eight thousand, nine hundred ninety-eight".