80306688 has 240 divisors, whose sum is σ = 274294944. Its totient is φ = 20643840.

The previous prime is 80306651. The next prime is 80306693. The reversal of 80306688 is 88660308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 827856 + ... + 827952.

Almost surely, 2^80306688 is an apocalyptic number.

80306688 is a gapful number since it is divisible by the number (88) 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 80306688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137147472).

80306688 is an abundant number, since it is smaller than the sum of its proper divisors (193988256).

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

80306688 is a wasteful number, since it uses less digits than its factorization.

80306688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 80306688 is about 8961.3998906421. The cubic root of 80306688 is about 431.4368519424.

The spelling of 80306688 in words is "eighty million, three hundred six thousand, six hundred eighty-eight".