33406340 has 24 divisors (see below), whose sum is σ = 76531392. Its totient is φ = 12147680.

The previous prime is 33406339. The next prime is 33406367. The reversal of 33406340 is 4360433.

It is a super-2 number, since 2×33406340² = 2231967104391200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75704 + ... + 76143.

It is an arithmetic number, because the mean of its divisors is an integer number (3188808).

Almost surely, 2^33406340 is an apocalyptic number.

It is an amenable number.

33406340 is an abundant number, since it is smaller than the sum of its proper divisors (43125052).

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

33406340 is a wasteful number, since it uses less digits than its factorization.

33406340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151867 (or 151865 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 33406340 is about 5779.8217965609. The cubic root of 33406340 is about 322.0645807481.

Adding to 33406340 its reverse (4360433), we get a palindrome (37766773).

The spelling of 33406340 in words is "thirty-three million, four hundred six thousand, three hundred forty".