33308142 has 48 divisors (see below), whose sum is σ = 77962320. Its totient is φ = 9459072.

The previous prime is 33308131. The next prime is 33308203. The reversal of 33308142 is 24180333.

It is a super-2 number, since 2×33308142² = 2218864646984328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81234 + ... + 81642.

It is an arithmetic number, because the mean of its divisors is an integer number (1624215).

Almost surely, 2^33308142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33308142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38981160).

33308142 is an abundant number, since it is smaller than the sum of its proper divisors (44654178).

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

33308142 is a wasteful number, since it uses less digits than its factorization.

33308142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 698 counting only the distinct ones).

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

The square root of 33308142 is about 5771.3206460913. The cubic root of 33308142 is about 321.7487012201.

Adding to 33308142 its reverse (24180333), we get a palindrome (57488475).

The spelling of 33308142 in words is "thirty-three million, three hundred eight thousand, one hundred forty-two".