33885140 has 24 divisors (see below), whose sum is σ = 72136680. Its totient is φ = 13367808.

The previous prime is 33885127. The next prime is 33885143. The reversal of 33885140 is 4158833.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7300804 + 26584336 = 2702^2 + 5156^2 .

It is a super-2 number, since 2×33885140² = 2296405425639200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33885097 and 33885106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33885143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10145 + ... + 13064.

It is an arithmetic number, because the mean of its divisors is an integer number (3005695).

Almost surely, 2^33885140 is an apocalyptic number.

It is an amenable number.

33885140 is an abundant number, since it is smaller than the sum of its proper divisors (38251540).

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

33885140 is a wasteful number, since it uses less digits than its factorization.

33885140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23291 (or 23289 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 33885140 is about 5821.0943988223. The cubic root of 33885140 is about 323.5959628576.

The spelling of 33885140 in words is "thirty-three million, eight hundred eighty-five thousand, one hundred forty".