83433240 has 160 divisors (see below), whose sum is σ = 306052560. Its totient is φ = 20217600.

The previous prime is 83433239. The next prime is 83433269. The reversal of 83433240 is 4233438.

It is a super-2 number, since 2×83433240² = 13922211073795200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 34470 + ... + 36810.

Almost surely, 2^83433240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83433240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153026280).

83433240 is an abundant number, since it is smaller than the sum of its proper divisors (222619320).

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

83433240 is a wasteful number, since it uses less digits than its factorization.

83433240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2362 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 83433240 is about 9134.1797661312. The cubic root of 83433240 is about 436.9647156831.

Adding to 83433240 its reverse (4233438), we get a palindrome (87666678).

The spelling of 83433240 in words is "eighty-three million, four hundred thirty-three thousand, two hundred forty".