33799780 has 48 divisors (see below), whose sum is σ = 81801216. Its totient is φ = 11491200.

The previous prime is 33799771. The next prime is 33799781. The reversal of 33799780 is 8799733.

It is a super-2 number, since 2×33799780² = 2284850256096800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33799780.

It is not an unprimeable number, because it can be changed into a prime (33799781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16830 + ... + 18730.

It is an arithmetic number, because the mean of its divisors is an integer number (1704192).

Almost surely, 2^33799780 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 33799780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40900608).

33799780 is an abundant number, since it is smaller than the sum of its proper divisors (48001436).

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

33799780 is a wasteful number, since it uses less digits than its factorization.

33799780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 33799780 is about 5813.7578208935. The cubic root of 33799780 is about 323.3240110207.

The spelling of 33799780 in words is "thirty-three million, seven hundred ninety-nine thousand, seven hundred eighty".