305489134 has 4 divisors (see below), whose sum is σ = 458233704. Its totient is φ = 152744566.

The previous prime is 305489117. The next prime is 305489141. The reversal of 305489134 is 431984503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431984503 = 53 ⋅8150651.

It is a super-2 number, since 2×305489134² = 186647221984139912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305489093 and 305489102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76372282 + ... + 76372285.

It is an arithmetic number, because the mean of its divisors is an integer number (114558426).

Almost surely, 2^305489134 is an apocalyptic number.

305489134 is a deficient number, since it is larger than the sum of its proper divisors (152744570).

305489134 is a wasteful number, since it uses less digits than its factorization.

305489134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152744569.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 305489134 is about 17478.2474521904. The cubic root of 305489134 is about 673.4911952732.

The spelling of 305489134 in words is "three hundred five million, four hundred eighty-nine thousand, one hundred thirty-four".