33243243 has 32 divisors (see below), whose sum is σ = 50077440. Its totient is φ = 19443840.

The previous prime is 33243239. The next prime is 33243263. The reversal of 33243243 is 34234233.

It is not a de Polignac number, because 33243243 - 2² = 33243239 is a prime.

It is a super-2 number, since 2×33243243² = 2210226410314098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33243233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145053 + ... + 145281.

It is an arithmetic number, because the mean of its divisors is an integer number (1564920).

Almost surely, 2^33243243 is an apocalyptic number.

33243243 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

33243243 is a deficient number, since it is larger than the sum of its proper divisors (16834197).

33243243 is a wasteful number, since it uses less digits than its factorization.

33243243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its digits is 5184, while the sum is 24.

The square root of 33243243 is about 5765.6953613593. The cubic root of 33243243 is about 321.5395957350.

Adding to 33243243 its reverse (34234233), we get a palindrome (67477476).

The spelling of 33243243 in words is "thirty-three million, two hundred forty-three thousand, two hundred forty-three".