33898145 has 4 divisors (see below), whose sum is σ = 40677780. Its totient is φ = 27118512.

The previous prime is 33898133. The next prime is 33898157. The reversal of 33898145 is 54189833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54189833 = 101 ⋅536533.

It is an interprime number because it is at equal distance from previous prime (33898133) and next prime (33898157).

It can be written as a sum of positive squares in 2 ways, for example, as 14432401 + 19465744 = 3799^2 + 4412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33898145 is a prime.

It is a super-2 number, since 2×33898145² = 2298168468882050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3389810 + ... + 3389819.

It is an arithmetic number, because the mean of its divisors is an integer number (10169445).

Almost surely, 2^33898145 is an apocalyptic number.

It is an amenable number.

33898145 is a deficient number, since it is larger than the sum of its proper divisors (6779635).

33898145 is an equidigital number, since it uses as much as digits as its factorization.

33898145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6779634.

The product of its digits is 103680, while the sum is 41.

The square root of 33898145 is about 5822.2113496506. The cubic root of 33898145 is about 323.6373559012.

It can be divided in two parts, 33898 and 145, that added together give a palindrome (34043).

The spelling of 33898145 in words is "thirty-three million, eight hundred ninety-eight thousand, one hundred forty-five".