33010428 has 96 divisors (see below), whose sum is σ = 89413632. Its totient is φ = 9380800.

The previous prime is 33010399. The next prime is 33010433. The reversal of 33010428 is 82401033.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251923 + ... + 252053.

It is an arithmetic number, because the mean of its divisors is an integer number (931392).

Almost surely, 2^33010428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33010428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44706816).

33010428 is an abundant number, since it is smaller than the sum of its proper divisors (56403204).

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

33010428 is a wasteful number, since it uses less digits than its factorization.

33010428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 33010428 is about 5745.4702157439. The cubic root of 33010428 is about 320.7872154697.

The spelling of 33010428 in words is "thirty-three million, ten thousand, four hundred twenty-eight".