345099888 has 240 divisors, whose sum is σ = 1195717120. Its totient is φ = 90699264.

The previous prime is 345099883. The next prime is 345099893. The reversal of 345099888 is 888990543.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (345099883) and next prime (345099893).

It is a super-2 number, since 2×345099888² = 238187865395225088, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345099883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 708381 + ... + 708867.

Almost surely, 2^345099888 is an apocalyptic number.

345099888 is a gapful number since it is divisible by the number (38) 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 345099888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597858560).

345099888 is an abundant number, since it is smaller than the sum of its proper divisors (850617232).

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

345099888 is a wasteful number, since it uses less digits than its factorization.

345099888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 345099888 is about 18576.8643209773. The cubic root of 345099888 is about 701.4255899718.

The spelling of 345099888 in words is "three hundred forty-five million, ninety-nine thousand, eight hundred eighty-eight".