33278130 has 48 divisors (see below), whose sum is σ = 88545600. Its totient is φ = 8666784.

The previous prime is 33278099. The next prime is 33278213. The reversal of 33278130 is 3187233.

It is a super-2 number, since 2×33278130² = 2214867872593800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33278094 and 33278103.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430 + ... + 8169.

It is an arithmetic number, because the mean of its divisors is an integer number (1844700).

Almost surely, 2^33278130 is an apocalyptic number.

33278130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33278130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44272800).

33278130 is an abundant number, since it is smaller than the sum of its proper divisors (55267470).

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

33278130 is a wasteful number, since it uses less digits than its factorization.

33278130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655 (or 8652 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 33278130 is about 5768.7199620020. The cubic root of 33278130 is about 321.6520359291.

The spelling of 33278130 in words is "thirty-three million, two hundred seventy-eight thousand, one hundred thirty".