33403420 has 12 divisors (see below), whose sum is σ = 70147224. Its totient is φ = 13361360.

The previous prime is 33403411. The next prime is 33403423. The reversal of 33403420 is 2430433.

It is a super-2 number, since 2×33403420² = 2231576935392800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33403423) 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, 835066 + ... + 835105.

It is an arithmetic number, because the mean of its divisors is an integer number (5845602).

Almost surely, 2^33403420 is an apocalyptic number.

It is an amenable number.

33403420 is an abundant number, since it is smaller than the sum of its proper divisors (36743804).

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

33403420 is a wasteful number, since it uses less digits than its factorization.

33403420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670180 (or 1670178 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 33403420 is about 5779.5691880970. The cubic root of 33403420 is about 322.0551967412.

Adding to 33403420 its reverse (2430433), we get a palindrome (35833853).

The spelling of 33403420 in words is "thirty-three million, four hundred three thousand, four hundred twenty".