233445690 has 24 divisors (see below), whose sum is σ = 606959028. Its totient is φ = 62252160.

The previous prime is 233445661. The next prime is 233445697. The reversal of 233445690 is 96544332.

233445690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 221146641 + 12299049 = 14871^2 + 3507^2 .

It is a super-2 number, since 2×233445690² = 108993780359152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (233445697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1296831 + ... + 1297010.

Almost surely, 2^233445690 is an apocalyptic number.

233445690 is an abundant number, since it is smaller than the sum of its proper divisors (373513338).

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

233445690 is a wasteful number, since it uses less digits than its factorization.

233445690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593854 (or 2593851 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 233445690 is about 15278.9296091055. The cubic root of 233445690 is about 615.7370500950.

The spelling of 233445690 in words is "two hundred thirty-three million, four hundred forty-five thousand, six hundred ninety".