203442660 has 36 divisors (see below), whose sum is σ = 617109948. Its totient is φ = 54251328.

The previous prime is 203442647. The next prime is 203442661. The reversal of 203442660 is 66244302.

It can be written as a sum of positive squares in 2 ways, for example, as 139570596 + 63872064 = 11814^2 + 7992^2 .

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 (203442661) 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, 564939 + ... + 565298.

It is an arithmetic number, because the mean of its divisors is an integer number (17141943).

Almost surely, 2^203442660 is an apocalyptic number.

203442660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203442660 is an abundant number, since it is smaller than the sum of its proper divisors (413667288).

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

203442660 is a wasteful number, since it uses less digits than its factorization.

203442660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130252 (or 1130247 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 203442660 is about 14263.3327101348. The cubic root of 203442660 is about 588.1399430898.

Adding to 203442660 its reverse (66244302), we get a palindrome (269686962).

The spelling of 203442660 in words is "two hundred three million, four hundred forty-two thousand, six hundred sixty".