33159420 has 72 divisors (see below), whose sum is σ = 114957024. Its totient is φ = 7579008.

The previous prime is 33159391. The next prime is 33159421. The reversal of 33159420 is 2495133.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33159421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11899 + ... + 14418.

Almost surely, 2^33159420 is an apocalyptic number.

33159420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33159420 is an abundant number, since it is smaller than the sum of its proper divisors (81797604).

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

33159420 is a wasteful number, since it uses less digits than its factorization.

33159420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26339 (or 26334 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 33159420 is about 5758.4216587534. The cubic root of 33159420 is about 321.2691137118.

The spelling of 33159420 in words is "thirty-three million, one hundred fifty-nine thousand, four hundred twenty".