33816040 has 32 divisors (see below), whose sum is σ = 78543360. Its totient is φ = 13089600.

The previous prime is 33816023. The next prime is 33816047. The reversal of 33816040 is 4061833.

It is a super-2 number, since 2×33816040² = 2287049122563200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33815996 and 33816014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33816047) 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, 12396 + ... + 14875.

It is an arithmetic number, because the mean of its divisors is an integer number (2454480).

Almost surely, 2^33816040 is an apocalyptic number.

It is an amenable number.

33816040 is an abundant number, since it is smaller than the sum of its proper divisors (44727320).

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

33816040 is a wasteful number, since it uses less digits than its factorization.

33816040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27313 (or 27309 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 33816040 is about 5815.1560598147. The cubic root of 33816040 is about 323.3758496777.

Adding to 33816040 its reverse (4061833), we get a palindrome (37877873).

The spelling of 33816040 in words is "thirty-three million, eight hundred sixteen thousand, forty".