203056640 has 40 divisors (see below), whose sum is σ = 486866160. Its totient is φ = 81221632.

The previous prime is 203056631. The next prime is 203056643. The reversal of 203056640 is 46650302.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203056643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37100 + ... + 42219.

It is an arithmetic number, because the mean of its divisors is an integer number (12171654).

Almost surely, 2^203056640 is an apocalyptic number.

203056640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203056640 is an abundant number, since it is smaller than the sum of its proper divisors (283809520).

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

203056640 is an frugal number, since it uses more digits than its factorization.

203056640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79342 (or 79326 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 203056640 is about 14249.7943844815. The cubic root of 203056640 is about 587.7677210485.

The spelling of 203056640 in words is "two hundred three million, fifty-six thousand, six hundred forty".