203155040 has 48 divisors (see below), whose sum is σ = 523590480. Its totient is φ = 73873920.

The previous prime is 203155039. The next prime is 203155157. The reversal of 203155040 is 40551302.

203155040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 55955 + ... + 59474.

It is an arithmetic number, because the mean of its divisors is an integer number (10908135).

Almost surely, 2^203155040 is an apocalyptic number.

203155040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203155040 is an abundant number, since it is smaller than the sum of its proper divisors (320435440).

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

203155040 is a wasteful number, since it uses less digits than its factorization.

203155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115455 (or 115447 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 203155040 is about 14253.2466476940. The cubic root of 203155040 is about 587.8626485916.

The spelling of 203155040 in words is "two hundred three million, one hundred fifty-five thousand, forty".