33230520 has 128 divisors (see below), whose sum is σ = 114696000. Its totient is φ = 8547840.

The previous prime is 33230513. The next prime is 33230537. The reversal of 33230520 is 2503233.

It is a super-2 number, since 2×33230520² = 2208534918940800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33230493 and 33230502.

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, 30790 + ... + 31850.

Almost surely, 2^33230520 is an apocalyptic number.

33230520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33230520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57348000).

33230520 is an abundant number, since it is smaller than the sum of its proper divisors (81465480).

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

33230520 is a wasteful number, since it uses less digits than its factorization.

33230520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 33230520 is about 5764.5919196418. The cubic root of 33230520 is about 321.4985701518.

Adding to 33230520 its reverse (2503233), we get a palindrome (35733753).

The spelling of 33230520 in words is "thirty-three million, two hundred thirty thousand, five hundred twenty".