33130840 has 32 divisors (see below), whose sum is σ = 74730960. Its totient is φ = 13219200.

The previous prime is 33130837. The next prime is 33130843. The reversal of 33130840 is 4803133.

It is an interprime number because it is at equal distance from previous prime (33130837) and next prime (33130843).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33130843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20875 + ... + 22405.

Almost surely, 2^33130840 is an apocalyptic number.

It is an amenable number.

33130840 is an abundant number, since it is smaller than the sum of its proper divisors (41600120).

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

33130840 is a wasteful number, since it uses less digits than its factorization.

33130840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 33130840 is about 5755.9395410306. The cubic root of 33130840 is about 321.1767869012.

Adding to 33130840 its reverse (4803133), we get a palindrome (37933973).

The spelling of 33130840 in words is "thirty-three million, one hundred thirty thousand, eight hundred forty".