305397456 has 160 divisors (see below), whose sum is σ = 979937280. Its totient is φ = 79805952.

The previous prime is 305397439. The next prime is 305397487. The reversal of 305397456 is 654793503.

It is a super-2 number, since 2×305397456² = 186535212262543872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 606901 + ... + 607403.

It is an arithmetic number, because the mean of its divisors is an integer number (6124608).

Almost surely, 2^305397456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305397456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489968640).

305397456 is an abundant number, since it is smaller than the sum of its proper divisors (674539824).

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

305397456 is a wasteful number, since it uses less digits than its factorization.

305397456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 42.

The square root of 305397456 is about 17475.6246240299. The cubic root of 305397456 is about 673.4238164409.

The spelling of 305397456 in words is "three hundred five million, three hundred ninety-seven thousand, four hundred fifty-six".