302220040 has 32 divisors (see below), whose sum is σ = 681975000. Its totient is φ = 120536064.

The previous prime is 302219993. The next prime is 302220053. The reversal of 302220040 is 40022203.

It can be written as a sum of positive squares in 4 ways, for example, as 254913156 + 47306884 = 15966^2 + 6878^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 302220040.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3136 + ... + 24784.

Almost surely, 2^302220040 is an apocalyptic number.

It is an amenable number.

302220040 is an abundant number, since it is smaller than the sum of its proper divisors (379754960).

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

302220040 is a wasteful number, since it uses less digits than its factorization.

302220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22009 (or 22005 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 302220040 is about 17384.4769837922. The cubic root of 302220040 is about 671.0801911677.

Adding to 302220040 its reverse (40022203), we get a palindrome (342242243).

The spelling of 302220040 in words is "three hundred two million, two hundred twenty thousand, forty".