33345140 has 24 divisors (see below), whose sum is σ = 71918952. Its totient is φ = 12977280.

The previous prime is 33345083. The next prime is 33345161. The reversal of 33345140 is 4154333.

It can be written as a sum of positive squares in 4 ways, for example, as 17007376 + 16337764 = 4124^2 + 4042^2 .

It is a super-2 number, since 2×33345140² = 2223796723239200, which contains 22 as substring.

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, 21791 + ... + 23270.

It is an arithmetic number, because the mean of its divisors is an integer number (2996623).

Almost surely, 2^33345140 is an apocalyptic number.

It is an amenable number.

33345140 is an abundant number, since it is smaller than the sum of its proper divisors (38573812).

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

33345140 is a wasteful number, since it uses less digits than its factorization.

33345140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45107 (or 45105 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 33345140 is about 5774.5250886978. The cubic root of 33345140 is about 321.8677877543.

Adding to 33345140 its reverse (4154333), we get a palindrome (37499473).

The spelling of 33345140 in words is "thirty-three million, three hundred forty-five thousand, one hundred forty".