203249380 has 12 divisors (see below), whose sum is σ = 426823740. Its totient is φ = 81299744.

The previous prime is 203249359. The next prime is 203249393. The reversal of 203249380 is 83942302.

203249380 is digitally balanced in base 2, 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 144144036 + 59105344 = 12006^2 + 7688^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5081215 + ... + 5081254.

It is an arithmetic number, because the mean of its divisors is an integer number (35568645).

Almost surely, 2^203249380 is an apocalyptic number.

203249380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203249380 is an abundant number, since it is smaller than the sum of its proper divisors (223574360).

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

203249380 is a wasteful number, since it uses less digits than its factorization.

203249380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10162478 (or 10162476 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 203249380 is about 14256.5556850173. Note that the first 3 decimals coincide. The cubic root of 203249380 is about 587.9536306316.

The spelling of 203249380 in words is "two hundred three million, two hundred forty-nine thousand, three hundred eighty".