80609280 has 144 divisors (see below), whose sum is σ = 264240144. Its totient is φ = 20971520.

The previous prime is 80609279. The next prime is 80609311. The reversal of 80609280 is 8290608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966060 + ... + 1966100.

It is an arithmetic number, because the mean of its divisors is an integer number (1835001).

Almost surely, 2^80609280 is an apocalyptic number.

80609280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80609280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132120072).

80609280 is an abundant number, since it is smaller than the sum of its proper divisors (183630864).

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

80609280 is an frugal number, since it uses more digits than its factorization.

80609280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 80609280 is about 8978.2670933761. The cubic root of 80609280 is about 431.9780510110.

Adding to 80609280 its reverse (8290608), we get a palindrome (88899888).

The spelling of 80609280 in words is "eighty million, six hundred nine thousand, two hundred eighty".