306400224 has 48 divisors (see below), whose sum is σ = 866173392. Its totient is φ = 94276608.

The previous prime is 306400217. The next prime is 306400229. The reversal of 306400224 is 422004603.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 306400224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306400229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121509 + ... + 124004.

It is an arithmetic number, because the mean of its divisors is an integer number (18045279).

Almost surely, 2^306400224 is an apocalyptic number.

It is an amenable number.

306400224 is an abundant number, since it is smaller than the sum of its proper divisors (559773168).

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

306400224 is a wasteful number, since it uses less digits than its factorization.

306400224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245539 (or 245531 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 306400224 is about 17504.2915880649. The cubic root of 306400224 is about 674.1600702269.

Adding to 306400224 its reverse (422004603), we get a palindrome (728404827).

The spelling of 306400224 in words is "three hundred six million, four hundred thousand, two hundred twenty-four".