305340945 has 64 divisors (see below), whose sum is σ = 603832320. Its totient is φ = 128302848.

The previous prime is 305340943. The next prime is 305340949. The reversal of 305340945 is 549043503.

It is not a de Polignac number, because 305340945 - 2¹ = 305340943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (305340943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 637216 + ... + 637694.

It is an arithmetic number, because the mean of its divisors is an integer number (9434880).

Almost surely, 2^305340945 is an apocalyptic number.

305340945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

305340945 is a deficient number, since it is larger than the sum of its proper divisors (298491375).

305340945 is a wasteful number, since it uses less digits than its factorization.

305340945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

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

The square root of 305340945 is about 17474.0076971484. The cubic root of 305340945 is about 673.3822769104.

The spelling of 305340945 in words is "three hundred five million, three hundred forty thousand, nine hundred forty-five".