33634340 has 12 divisors (see below), whose sum is σ = 70632156. Its totient is φ = 13453728.

The previous prime is 33634331. The next prime is 33634343. The reversal of 33634340 is 4343633.

It can be written as a sum of positive squares in 2 ways, for example, as 20268004 + 13366336 = 4502^2 + 3656^2 .

It is a super-2 number, since 2×33634340² = 2262537654471200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33634343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840839 + ... + 840878.

It is an arithmetic number, because the mean of its divisors is an integer number (5886013).

Almost surely, 2^33634340 is an apocalyptic number.

It is an amenable number.

33634340 is an abundant number, since it is smaller than the sum of its proper divisors (36997816).

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

33634340 is a wasteful number, since it uses less digits than its factorization.

33634340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681726 (or 1681724 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 26.

The square root of 33634340 is about 5799.5120484399. The cubic root of 33634340 is about 322.7956226083.

Adding to 33634340 its reverse (4343633), we get a palindrome (37977973).

The spelling of 33634340 in words is "thirty-three million, six hundred thirty-four thousand, three hundred forty".