33245740 has 48 divisors (see below), whose sum is σ = 76557600. Its totient is φ = 12026880.

The previous prime is 33245699. The next prime is 33245743. The reversal of 33245740 is 4754233.

It is a super-2 number, since 2×33245740² = 2210558456295200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33245699 and 33245708.

It is not an unprimeable number, because it can be changed into a prime (33245743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76564 + ... + 76996.

It is an arithmetic number, because the mean of its divisors is an integer number (1594950).

Almost surely, 2^33245740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33245740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38278800).

33245740 is an abundant number, since it is smaller than the sum of its proper divisors (43311860).

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

33245740 is a wasteful number, since it uses less digits than its factorization.

33245740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 33245740 is about 5765.9118966561. The cubic root of 33245740 is about 321.5476461356.

Adding to 33245740 its reverse (4754233), we get a palindrome (37999973).

The spelling of 33245740 in words is "thirty-three million, two hundred forty-five thousand, seven hundred forty".