203029040 has 40 divisors (see below), whose sum is σ = 475670448. Its totient is φ = 80587520.

The previous prime is 203029037. The next prime is 203029069. The reversal of 203029040 is 40920302.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×203029040³ (a number of 26 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794 + ... + 20166.

Almost surely, 2^203029040 is an apocalyptic number.

203029040 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 203029040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237835224).

203029040 is an abundant number, since it is smaller than the sum of its proper divisors (272641408).

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

203029040 is a wasteful number, since it uses less digits than its factorization.

203029040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19517 (or 19511 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 203029040 is about 14248.8259165448. The cubic root of 203029040 is about 587.7410895231.

Adding to 203029040 its reverse (40920302), we get a palindrome (243949342).

The spelling of 203029040 in words is "two hundred three million, twenty-nine thousand, forty".