203245690 has 16 divisors (see below), whose sum is σ = 366043392. Its totient is φ = 81253584.

The previous prime is 203245681. The next prime is 203245709. The reversal of 203245690 is 96542302.

It is a super-2 number, since 2×203245690² = 82617621007152200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18427 + ... + 27313.

It is an arithmetic number, because the mean of its divisors is an integer number (22877712).

Almost surely, 2^203245690 is an apocalyptic number.

203245690 is a deficient number, since it is larger than the sum of its proper divisors (162797702).

203245690 is a wasteful number, since it uses less digits than its factorization.

203245690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11181.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 203245690 is about 14256.4262702825. The cubic root of 203245690 is about 587.9500725035.

Adding to 203245690 its reverse (96542302), we get a palindrome (299787992).

The spelling of 203245690 in words is "two hundred three million, two hundred forty-five thousand, six hundred ninety".