306401506 has 16 divisors (see below), whose sum is σ = 489336120. Its totient is φ = 143389440.

The previous prime is 306401441. The next prime is 306401567. The reversal of 306401506 is 605104603.

It can be written as a sum of positive squares in 4 ways, for example, as 165765625 + 140635881 = 12875^2 + 11859^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18741 + ... + 31048.

Almost surely, 2^306401506 is an apocalyptic number.

306401506 is a deficient number, since it is larger than the sum of its proper divisors (182934614).

306401506 is a wasteful number, since it uses less digits than its factorization.

306401506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49989.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 306401506 is about 17504.3282076177. The cubic root of 306401506 is about 674.1610104700.

The spelling of 306401506 in words is "three hundred six million, four hundred one thousand, five hundred six".