33370428 has 48 divisors (see below), whose sum is σ = 95836160. Its totient is φ = 8800704.

The previous prime is 33370409. The next prime is 33370429. The reversal of 33370428 is 82407333.

It is a super-2 number, since 2×33370428² = 2227170929806368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33370395 and 33370404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33370429) 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, 14188 + ... + 16371.

Almost surely, 2^33370428 is an apocalyptic number.

It is an amenable number.

33370428 is an abundant number, since it is smaller than the sum of its proper divisors (62465732).

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

33370428 is a wasteful number, since it uses less digits than its factorization.

33370428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30586 (or 30584 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 33370428 is about 5776.7142910135. The cubic root of 33370428 is about 321.9491323013.

The spelling of 33370428 in words is "thirty-three million, three hundred seventy thousand, four hundred twenty-eight".