204315140 has 24 divisors (see below), whose sum is σ = 429371712. Its totient is φ = 81667040.

The previous prime is 204315131. The next prime is 204315143. The reversal of 204315140 is 41513402.

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

It is not an unprimeable number, because it can be changed into a prime (204315143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34175 + ... + 39705.

It is an arithmetic number, because the mean of its divisors is an integer number (17890488).

Almost surely, 2^204315140 is an apocalyptic number.

204315140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204315140 is an abundant number, since it is smaller than the sum of its proper divisors (225056572).

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

204315140 is a wasteful number, since it uses less digits than its factorization.

204315140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7387 (or 7385 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 204315140 is about 14293.8847064050. The cubic root of 204315140 is about 588.9795056683.

Adding to 204315140 its reverse (41513402), we get a palindrome (245828542).

The spelling of 204315140 in words is "two hundred four million, three hundred fifteen thousand, one hundred forty".