33728326 has 12 divisors (see below), whose sum is σ = 51194268. Its totient is φ = 16664472.

The previous prime is 33728293. The next prime is 33728369. The reversal of 33728326 is 62382733.

33728326 = 70² + 71² + ... + 466².

It is a super-2 number, since 2×33728326² = 2275199949524552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33728291 and 33728300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84760 + ... + 85156.

It is an arithmetic number, because the mean of its divisors is an integer number (4266189).

Almost surely, 2^33728326 is an apocalyptic number.

33728326 is a deficient number, since it is larger than the sum of its proper divisors (17465942).

33728326 is an equidigital number, since it uses as much as digits as its factorization.

33728326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 506 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 33728326 is about 5807.6093188161. The cubic root of 33728326 is about 323.0960105910.

The spelling of 33728326 in words is "thirty-three million, seven hundred twenty-eight thousand, three hundred twenty-six".