33030120 has 32 divisors (see below), whose sum is σ = 99090720. Its totient is φ = 8808000.

The previous prime is 33030119. The next prime is 33030121. The reversal of 33030120 is 2103033.

Added to its reverse (2103033) it gives a triangular number (35133153 = T₈₃₈₂).

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (33030119) and next prime (33030121).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 33030096 and 33030105.

It is not an unprimeable number, because it can be changed into a prime (33030121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137506 + ... + 137745.

It is an arithmetic number, because the mean of its divisors is an integer number (3096585).

Almost surely, 2^33030120 is an apocalyptic number.

33030120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33030120 is an abundant number, since it is smaller than the sum of its proper divisors (66060600).

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

33030120 is a wasteful number, since it uses less digits than its factorization.

33030120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275265 (or 275261 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 33030120 is about 5747.1836581059. The cubic root of 33030120 is about 320.8509901266.

Adding to 33030120 its reverse (2103033), we get a palindrome (35133153).

The spelling of 33030120 in words is "thirty-three million, thirty thousand, one hundred twenty".