304722012 has 48 divisors (see below), whose sum is σ = 814302720. Its totient is φ = 86880192.

The previous prime is 304721999. The next prime is 304722013. The reversal of 304722012 is 210227403.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 304722012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304722013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39193 + ... + 46319.

It is an arithmetic number, because the mean of its divisors is an integer number (16964640).

Almost surely, 2^304722012 is an apocalyptic number.

It is an amenable number.

304722012 is an abundant number, since it is smaller than the sum of its proper divisors (509580708).

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

304722012 is a wasteful number, since it uses less digits than its factorization.

304722012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650 (or 7648 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 304722012 is about 17456.2886089799. The cubic root of 304722012 is about 672.9269821067.

Adding to 304722012 its reverse (210227403), we get a palindrome (514949415).

The spelling of 304722012 in words is "three hundred four million, seven hundred twenty-two thousand, twelve".