33225428 has 24 divisors (see below), whose sum is σ = 61307904. Its totient is φ = 15732000.

The previous prime is 33225427. The next prime is 33225461. The reversal of 33225428 is 82452233.

It is a super-2 number, since 2×33225428² = 2207858131566368, 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 33225428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33225421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978 + ... + 8678.

It is an arithmetic number, because the mean of its divisors is an integer number (2554496).

Almost surely, 2^33225428 is an apocalyptic number.

It is an amenable number.

33225428 is a deficient number, since it is larger than the sum of its proper divisors (28082476).

33225428 is a wasteful number, since it uses less digits than its factorization.

33225428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783 (or 5781 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 33225428 is about 5764.1502409288. The cubic root of 33225428 is about 321.4821479558.

The spelling of 33225428 in words is "thirty-three million, two hundred twenty-five thousand, four hundred twenty-eight".