345398256 has 300 divisors, whose sum is σ = 1201046392. Its totient is φ = 96018048.

The previous prime is 345398237. The next prime is 345398267. The reversal of 345398256 is 652893543.

345398256 is a `hidden beast` number, since 3 + 4 + 5 + 398 + 256 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9335070 + ... + 9335106.

Almost surely, 2^345398256 is an apocalyptic number.

345398256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345398256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (600523196).

345398256 is an abundant number, since it is smaller than the sum of its proper divisors (855648136).

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

345398256 is an frugal number, since it uses more digits than its factorization.

345398256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 49 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 345398256 is about 18584.8932200322. The cubic root of 345398256 is about 701.6276789634.

The spelling of 345398256 in words is "three hundred forty-five million, three hundred ninety-eight thousand, two hundred fifty-six".