33649938 has 32 divisors (see below), whose sum is σ = 85461120. Its totient is φ = 9614160.

The previous prime is 33649937. The next prime is 33649949. The reversal of 33649938 is 83994633.

It is a super-2 number, since 2×33649938² = 2264636654807688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33649893 and 33649902.

It is not an unprimeable number, because it can be changed into a prime (33649933) 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, 44133 + ... + 44888.

It is an arithmetic number, because the mean of its divisors is an integer number (2670660).

Almost surely, 2^33649938 is an apocalyptic number.

33649938 is an abundant number, since it is smaller than the sum of its proper divisors (51811182).

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

33649938 is a wasteful number, since it uses less digits than its factorization.

33649938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89039 (or 89033 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 33649938 is about 5800.8566608735. The cubic root of 33649938 is about 322.8455139593.

The spelling of 33649938 in words is "thirty-three million, six hundred forty-nine thousand, nine hundred thirty-eight".