33251228 has 12 divisors (see below), whose sum is σ = 58230312. Its totient is φ = 16614000.

The previous prime is 33251227. The next prime is 33251243. The reversal of 33251228 is 82215233.

It is a super-2 number, since 2×33251228² = 2211288327015968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33251197 and 33251206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33251221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8603 + ... + 11853.

It is an arithmetic number, because the mean of its divisors is an integer number (4852526).

Almost surely, 2^33251228 is an apocalyptic number.

It is an amenable number.

33251228 is a deficient number, since it is larger than the sum of its proper divisors (24979084).

33251228 is a wasteful number, since it uses less digits than its factorization.

33251228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5812 (or 5810 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 33251228 is about 5766.3877774565. The cubic root of 33251228 is about 321.5653381907.

The spelling of 33251228 in words is "thirty-three million, two hundred fifty-one thousand, two hundred twenty-eight".