302972730 has 32 divisors (see below), whose sum is σ = 734341248. Its totient is φ = 79992000.

The previous prime is 302972723. The next prime is 302972731. The reversal of 302972730 is 37279203.

It is a junction number, because it is equal to n+sod(n) for n = 302972691 and 302972700.

It is not an unprimeable number, because it can be changed into a prime (302972731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46966 + ... + 53025.

It is an arithmetic number, because the mean of its divisors is an integer number (22948164).

Almost surely, 2^302972730 is an apocalyptic number.

302972730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

302972730 is an abundant number, since it is smaller than the sum of its proper divisors (431368518).

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

302972730 is a wasteful number, since it uses less digits than its factorization.

302972730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100102.

The product of its (nonzero) digits is 15876, while the sum is 33.

The square root of 302972730 is about 17406.1118576206. Note that the first 3 decimals coincide. The cubic root of 302972730 is about 671.6368458404.

The spelling of 302972730 in words is "three hundred two million, nine hundred seventy-two thousand, seven hundred thirty".