80828240 has 20 divisors (see below), whose sum is σ = 187925844. Its totient is φ = 32331264.

The previous prime is 80828227. The next prime is 80828243. The reversal of 80828240 is 4282808.

It can be written as a sum of positive squares in 2 ways, for example, as 37847104 + 42981136 = 6152^2 + 6556^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 80828197 and 80828206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80828243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505097 + ... + 505256.

Almost surely, 2^80828240 is an apocalyptic number.

80828240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80828240 is an abundant number, since it is smaller than the sum of its proper divisors (107097604).

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

80828240 is a wasteful number, since it uses less digits than its factorization.

80828240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010366 (or 1010360 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 80828240 is about 8990.4527138515. The cubic root of 80828240 is about 432.3688265372.

The spelling of 80828240 in words is "eighty million, eight hundred twenty-eight thousand, two hundred forty".