80669280 has 96 divisors (see below), whose sum is σ = 265192704. Its totient is φ = 20573696.

The previous prime is 80669243. The next prime is 80669293. The reversal of 80669280 is 8296608.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7387 + ... + 14693.

It is an arithmetic number, because the mean of its divisors is an integer number (2762424).

Almost surely, 2^80669280 is an apocalyptic number.

80669280 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 80669280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132596352).

80669280 is an abundant number, since it is smaller than the sum of its proper divisors (184523424).

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

80669280 is a wasteful number, since it uses less digits than its factorization.

80669280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348 (or 7340 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 80669280 is about 8981.6078738720. The cubic root of 80669280 is about 432.0852026732.

The spelling of 80669280 in words is "eighty million, six hundred sixty-nine thousand, two hundred eighty".