305242634 has 4 divisors (see below), whose sum is σ = 457863954. Its totient is φ = 152621316.

The previous prime is 305242627. The next prime is 305242673. The reversal of 305242634 is 436242503.

305242634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436242503 = 79 ⋅5522057.

It can be written as a sum of positive squares in only one way, i.e., 152646025 + 152596609 = 12355^2 + 12353^2 .

It is a super-2 number, since 2×305242634² = 186346131222515912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305242597 and 305242606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76310657 + ... + 76310660.

Almost surely, 2^305242634 is an apocalyptic number.

305242634 is a deficient number, since it is larger than the sum of its proper divisors (152621320).

305242634 is a wasteful number, since it uses less digits than its factorization.

305242634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152621319.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 305242634 is about 17471.1944067943. The cubic root of 305242634 is about 673.3099992458.

The spelling of 305242634 in words is "three hundred five million, two hundred forty-two thousand, six hundred thirty-four".