203238540 has 36 divisors (see below), whose sum is σ = 616490784. Its totient is φ = 54196896.

The previous prime is 203238493. The next prime is 203238547. The reversal of 203238540 is 45832302.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (203238547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 564372 + ... + 564731.

It is an arithmetic number, because the mean of its divisors is an integer number (17124744).

Almost surely, 2^203238540 is an apocalyptic number.

203238540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203238540 is an abundant number, since it is smaller than the sum of its proper divisors (413252244).

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

203238540 is a wasteful number, since it uses less digits than its factorization.

203238540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129118 (or 1129113 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 203238540 is about 14256.1755039702. The cubic root of 203238540 is about 587.9431779049.

The spelling of 203238540 in words is "two hundred three million, two hundred thirty-eight thousand, five hundred forty".