84288880 has 40 divisors (see below), whose sum is σ = 211048992. Its totient is φ = 31121664.

The previous prime is 84288851. The next prime is 84288889. The reversal of 84288880 is 8888248.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 84288880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84288889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39484 + ... + 41563.

Almost surely, 2^84288880 is an apocalyptic number.

84288880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84288880 is an abundant number, since it is smaller than the sum of its proper divisors (126760112).

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

84288880 is a wasteful number, since it uses less digits than its factorization.

84288880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81073 (or 81067 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 46.

The square root of 84288880 is about 9180.8975596071. The cubic root of 84288880 is about 438.4533853950.

The spelling of 84288880 in words is "eighty-four million, two hundred eighty-eight thousand, eight hundred eighty".