33420020 has 24 divisors (see below), whose sum is σ = 70423584. Its totient is φ = 13322016.

The previous prime is 33420017. The next prime is 33420041. The reversal of 33420020 is 2002433.

It is a super-2 number, since 2×33420020² = 2233795473600800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33419977 and 33420004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3419 + ... + 8861.

It is an arithmetic number, because the mean of its divisors is an integer number (2934316).

Almost surely, 2^33420020 is an apocalyptic number.

It is an amenable number.

33420020 is an abundant number, since it is smaller than the sum of its proper divisors (37003564).

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

33420020 is a wasteful number, since it uses less digits than its factorization.

33420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759 (or 5757 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 33420020 is about 5781.0051029211. The cubic root of 33420020 is about 322.1085368973.

Adding to 33420020 its reverse (2002433), we get a palindrome (35422453).

The spelling of 33420020 in words is "thirty-three million, four hundred twenty thousand, twenty".