84489280 has 28 divisors (see below), whose sum is σ = 201190860. Its totient is φ = 33795584.

The previous prime is 84489277. The next prime is 84489283. The reversal of 84489280 is 8298448.

It is an interprime number because it is at equal distance from previous prime (84489277) and next prime (84489283).

It can be written as a sum of positive squares in 2 ways, for example, as 14197824 + 70291456 = 3768^2 + 8384^2 .

It is not an unprimeable number, because it can be changed into a prime (84489283) 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, 131695 + ... + 132334.

Almost surely, 2^84489280 is an apocalyptic number.

84489280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84489280 is an abundant number, since it is smaller than the sum of its proper divisors (116701580).

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

84489280 is a wasteful number, since it uses less digits than its factorization.

84489280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264046 (or 264036 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 84489280 is about 9191.8050458003. The cubic root of 84489280 is about 438.8005902114.

The spelling of 84489280 in words is "eighty-four million, four hundred eighty-nine thousand, two hundred eighty".