303138936 has 80 divisors (see below), whose sum is σ = 851554440. Its totient is φ = 100751040.

The previous prime is 303138931. The next prime is 303138937. The reversal of 303138936 is 639831303.

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

It is a self number, because there is not a number n which added to its sum of digits gives 303138936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303138931) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 438351 + ... + 439041.

Almost surely, 2^303138936 is an apocalyptic number.

303138936 is a gapful number since it is divisible by the number (36) 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 303138936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425777220).

303138936 is an abundant number, since it is smaller than the sum of its proper divisors (548415504).

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

303138936 is a wasteful number, since it uses less digits than its factorization.

303138936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 303138936 is about 17410.8855604762. The cubic root of 303138936 is about 671.7596398038.

The spelling of 303138936 in words is "three hundred three million, one hundred thirty-eight thousand, nine hundred thirty-six".