203428885 has 32 divisors (see below), whose sum is σ = 285005952. Its totient is φ = 137748480.

The previous prime is 203428867. The next prime is 203428889. The reversal of 203428885 is 588824302.

It is not a de Polignac number, because 203428885 - 2⁵ = 203428853 is a prime.

It is a super-2 number, since 2×203428885² = 82766622504686450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203428889) 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, 89574 + ... + 91816.

It is an arithmetic number, because the mean of its divisors is an integer number (8906436).

Almost surely, 2^203428885 is an apocalyptic number.

It is an amenable number.

203428885 is a deficient number, since it is larger than the sum of its proper divisors (81577067).

203428885 is a wasteful number, since it uses less digits than its factorization.

203428885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 203428885 is about 14262.8498204251. The cubic root of 203428885 is about 588.1266685705.

The spelling of 203428885 in words is "two hundred three million, four hundred twenty-eight thousand, eight hundred eighty-five".