305252493 has 96 divisors (see below), whose sum is σ = 549593856. Its totient is φ = 146644992.

The previous prime is 305252491. The next prime is 305252513. The reversal of 305252493 is 394252503.

It is not a de Polignac number, because 305252493 - 2¹ = 305252491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305252491) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4181505 + ... + 4181577.

It is an arithmetic number, because the mean of its divisors is an integer number (5724936).

Almost surely, 2^305252493 is an apocalyptic number.

It is an amenable number.

305252493 is a deficient number, since it is larger than the sum of its proper divisors (244341363).

305252493 is a wasteful number, since it uses less digits than its factorization.

305252493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 305252493 is about 17471.4765546590. The cubic root of 305252493 is about 673.3172482243.

The spelling of 305252493 in words is "three hundred five million, two hundred fifty-two thousand, four hundred ninety-three".