83421330 has 32 divisors (see below), whose sum is σ = 200695104. Its totient is φ = 22191936.

The previous prime is 83421319. The next prime is 83421337. The reversal of 83421330 is 3312438.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83421330.

It is not an unprimeable number, because it can be changed into a prime (83421337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10152 + ... + 16428.

It is an arithmetic number, because the mean of its divisors is an integer number (6271722).

Almost surely, 2^83421330 is an apocalyptic number.

83421330 is an abundant number, since it is smaller than the sum of its proper divisors (117273774).

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

83421330 is a wasteful number, since it uses less digits than its factorization.

83421330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6730.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 83421330 is about 9133.5277959833. The cubic root of 83421330 is about 436.9439226218.

Adding to 83421330 its reverse (3312438), we get a palindrome (86733768).

The spelling of 83421330 in words is "eighty-three million, four hundred twenty-one thousand, three hundred thirty".