203890940 has 24 divisors (see below), whose sum is σ = 467096112. Its totient is φ = 74142080.

The previous prime is 203890933. The next prime is 203890949. The reversal of 203890940 is 49098302.

It is a self number, because there is not a number n which added to its sum of digits gives 203890940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203890949) by changing a digit.

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, 463169 + ... + 463608.

It is an arithmetic number, because the mean of its divisors is an integer number (19462338).

Almost surely, 2^203890940 is an apocalyptic number.

203890940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203890940 is an abundant number, since it is smaller than the sum of its proper divisors (263205172).

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

203890940 is a wasteful number, since it uses less digits than its factorization.

203890940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926797 (or 926795 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 203890940 is about 14279.0384830352. The cubic root of 203890940 is about 588.5716092917.

The spelling of 203890940 in words is "two hundred three million, eight hundred ninety thousand, nine hundred forty".