84280650 has 72 divisors (see below), whose sum is σ = 213905952. Its totient is φ = 21960000.

The previous prime is 84280643. The next prime is 84280657. The reversal of 84280650 is 5608248.

It is an interprime number because it is at equal distance from previous prime (84280643) and next prime (84280657).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84280657) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 558075 + ... + 558225.

It is an arithmetic number, because the mean of its divisors is an integer number (2970916).

Almost surely, 2^84280650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84280650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106952976).

84280650 is an abundant number, since it is smaller than the sum of its proper divisors (129625302).

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

84280650 is a wasteful number, since it uses less digits than its factorization.

84280650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 84280650 is about 9180.4493354084. The cubic root of 84280650 is about 438.4391146758.

Adding to 84280650 its reverse (5608248), we get a palindrome (89888898).

The spelling of 84280650 in words is "eighty-four million, two hundred eighty thousand, six hundred fifty".