203934816 has 72 divisors (see below), whose sum is σ = 581621040. Its totient is φ = 67781376.

The previous prime is 203934803. The next prime is 203934821. The reversal of 203934816 is 618439302.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125626 + ... + 127238.

It is an arithmetic number, because the mean of its divisors is an integer number (8078070).

Almost surely, 2^203934816 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 203934816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290810520).

203934816 is an abundant number, since it is smaller than the sum of its proper divisors (377686224).

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

203934816 is a wasteful number, since it uses less digits than its factorization.

203934816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 203934816 is about 14280.5747783484. The cubic root of 203934816 is about 588.6138251870.

The spelling of 203934816 in words is "two hundred three million, nine hundred thirty-four thousand, eight hundred sixteen".