305152136 has 8 divisors (see below), whose sum is σ = 572160270. Its totient is φ = 152576064.

The previous prime is 305152079. The next prime is 305152157. The reversal of 305152136 is 631251503.

It can be written as a sum of positive squares in only one way, i.e., 304502500 + 649636 = 17450^2 + 806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×305152136² = 186235652210724992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19072001 + ... + 19072016.

Almost surely, 2^305152136 is an apocalyptic number.

It is an amenable number.

305152136 is a deficient number, since it is larger than the sum of its proper divisors (267008134).

305152136 is a wasteful number, since it uses less digits than its factorization.

305152136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38144023 (or 38144019 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 305152136 is about 17468.6042945623. The cubic root of 305152136 is about 673.2434519331.

The spelling of 305152136 in words is "three hundred five million, one hundred fifty-two thousand, one hundred thirty-six".