302097138 has 64 divisors (see below), whose sum is σ = 710353152. Its totient is φ = 83865600.

The previous prime is 302097109. The next prime is 302097209. The reversal of 302097138 is 831790203.

It is a junction number, because it is equal to n+sod(n) for n = 302097099 and 302097108.

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 31 ways as a sum of consecutive naturals, for example, 250938 + ... + 252138.

It is an arithmetic number, because the mean of its divisors is an integer number (11099268).

Almost surely, 2^302097138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 302097138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355176576).

302097138 is an abundant number, since it is smaller than the sum of its proper divisors (408256014).

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

302097138 is a wasteful number, since it uses less digits than its factorization.

302097138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 302097138 is about 17380.9418041716. The cubic root of 302097138 is about 670.9892107898.

The spelling of 302097138 in words is "three hundred two million, ninety-seven thousand, one hundred thirty-eight".