33430020 has 48 divisors (see below), whose sum is σ = 100806720. Its totient is φ = 8228736.

The previous prime is 33429967. The next prime is 33430027. The reversal of 33430020 is 2003433.

It is a super-2 number, since 2×33430020² = 2235132474400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (33430027) 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, 20650 + ... + 22209.

It is an arithmetic number, because the mean of its divisors is an integer number (2100140).

Almost surely, 2^33430020 is an apocalyptic number.

33430020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33430020 is an abundant number, since it is smaller than the sum of its proper divisors (67376700).

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

33430020 is a wasteful number, since it uses less digits than its factorization.

33430020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42884 (or 42882 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 33430020 is about 5781.8699397340. The cubic root of 33430020 is about 322.1406609969.

Adding to 33430020 its reverse (2003433), we get a palindrome (35433453).

The spelling of 33430020 in words is "thirty-three million, four hundred thirty thousand, twenty".