306688146 has 32 divisors (see below), whose sum is σ = 635904000. Its totient is φ = 98503440.

The previous prime is 306688093. The next prime is 306688147. The reversal of 306688146 is 641886603.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 306688098 and 306688107.

It is not an unprimeable number, because it can be changed into a prime (306688147) 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, 41005 + ... + 47903.

It is an arithmetic number, because the mean of its divisors is an integer number (19872000).

Almost surely, 2^306688146 is an apocalyptic number.

306688146 is an abundant number, since it is smaller than the sum of its proper divisors (329215854).

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

306688146 is a wasteful number, since it uses less digits than its factorization.

306688146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7174.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 306688146 is about 17512.5139828638. The cubic root of 306688146 is about 674.3711718433.

The spelling of 306688146 in words is "three hundred six million, six hundred eighty-eight thousand, one hundred forty-six".