203215056 has 80 divisors (see below), whose sum is σ = 575433408. Its totient is φ = 61286400.

The previous prime is 203215049. The next prime is 203215073. The reversal of 203215056 is 650512302.

It is a super-5 number, since 5×203215056⁵ (a number of 43 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 126450 + ... + 128046.

Almost surely, 2^203215056 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 203215056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287716704).

203215056 is an abundant number, since it is smaller than the sum of its proper divisors (372218352).

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

203215056 is a wasteful number, since it uses less digits than its factorization.

203215056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860 (or 1854 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 203215056 is about 14255.3518371172. The cubic root of 203215056 is about 587.9205316269.

Adding to 203215056 its reverse (650512302), we get a palindrome (853727358).

The spelling of 203215056 in words is "two hundred three million, two hundred fifteen thousand, fifty-six".