305426730 has 64 divisors (see below), whose sum is σ = 839393280. Its totient is φ = 69674304.

The previous prime is 305426717. The next prime is 305426731. The reversal of 305426730 is 37624503.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (305426731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137287 + ... + 139493.

It is an arithmetic number, because the mean of its divisors is an integer number (13115520).

Almost surely, 2^305426730 is an apocalyptic number.

305426730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305426730 is an abundant number, since it is smaller than the sum of its proper divisors (533966550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305426730 is a wasteful number, since it uses less digits than its factorization.

305426730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 305426730 is about 17476.4621705882. The cubic root of 305426730 is about 673.4453328600.

The spelling of 305426730 in words is "three hundred five million, four hundred twenty-six thousand, seven hundred thirty".