203040156 has 96 divisors (see below), whose sum is σ = 551980800. Its totient is φ = 57438720.

The previous prime is 203040143. The next prime is 203040157. The reversal of 203040156 is 651040302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203040157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182530 + ... + 183638.

It is an arithmetic number, because the mean of its divisors is an integer number (5749800).

Almost surely, 2^203040156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203040156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275990400).

203040156 is an abundant number, since it is smaller than the sum of its proper divisors (348940644).

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

203040156 is a wasteful number, since it uses less digits than its factorization.

203040156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 203040156 is about 14249.2159784319. The cubic root of 203040156 is about 587.7518157567.

Adding to 203040156 its reverse (651040302), we get a palindrome (854080458).

The spelling of 203040156 in words is "two hundred three million, forty thousand, one hundred fifty-six".