203040 has 96 divisors (see below), whose sum is σ = 725760. Its totient is φ = 52992.
The previous prime is 203039. The next prime is 203051. The reversal of 203040 is 40302.
It is a tau number, because it is divible by the number of its divisors (96).
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a nialpdrome in base 12.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4297 + ... + 4343.
It is an arithmetic number, because the mean of its divisors is an integer number (7560).
2203040 is an apocalyptic number.
203040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 203040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362880).
203040 is an abundant number, since it is smaller than the sum of its proper divisors (522720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
203040 is a wasteful number, since it uses less digits than its factorization.
203040 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 71 (or 57 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 9.
The square root of 203040 is about 450.5996005324. The cubic root of 203040 is about 58.7751665229.
Adding to 203040 its reverse (40302), we get a palindrome (243342).
The spelling of 203040 in words is "two hundred three thousand, forty", and thus it is an iban number.
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