306400650 has 48 divisors (see below), whose sum is σ = 799874400. Its totient is φ = 77405760.

The previous prime is 306400643. The next prime is 306400657. The reversal of 306400650 is 56004603.

It is an interprime number because it is at equal distance from previous prime (306400643) and next prime (306400657).

It is a self number, because there is not a number n which added to its sum of digits gives 306400650.

It is not an unprimeable number, because it can be changed into a prime (306400657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50905 + ... + 56604.

It is an arithmetic number, because the mean of its divisors is an integer number (16664050).

Almost surely, 2^306400650 is an apocalyptic number.

306400650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

306400650 is an abundant number, since it is smaller than the sum of its proper divisors (493473750).

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

306400650 is a wasteful number, since it uses less digits than its factorization.

306400650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107543 (or 107538 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 306400650 is about 17504.3037565051. The cubic root of 306400650 is about 674.1603826637.

The spelling of 306400650 in words is "three hundred six million, four hundred thousand, six hundred fifty".