33881142 has 32 divisors (see below), whose sum is σ = 71596800. Its totient is φ = 10659168.

The previous prime is 33881131. The next prime is 33881173. The reversal of 33881142 is 24118833.

It is a super-2 number, since 2×33881142² = 2295863566448328, 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 15 ways as a sum of consecutive naturals, for example, 49708 + ... + 50384.

It is an arithmetic number, because the mean of its divisors is an integer number (2237400).

Almost surely, 2^33881142 is an apocalyptic number.

33881142 is an abundant number, since it is smaller than the sum of its proper divisors (37715658).

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

33881142 is a wasteful number, since it uses less digits than its factorization.

33881142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

The product of its digits is 4608, while the sum is 30.

The square root of 33881142 is about 5820.7509824764. The cubic root of 33881142 is about 323.5832356706.

Adding to 33881142 its reverse (24118833), we get a palindrome (57999975).

The spelling of 33881142 in words is "thirty-three million, eight hundred eighty-one thousand, one hundred forty-two".