345827988 has 48 divisors (see below), whose sum is σ = 978102720. Its totient is φ = 104796000.

The previous prime is 345827947. The next prime is 345828029. The reversal of 345827988 is 889728543.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (345827947) and next prime (345828029).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144363 + ... + 146738.

It is an arithmetic number, because the mean of its divisors is an integer number (20377140).

Almost surely, 2^345827988 is an apocalyptic number.

It is an amenable number.

345827988 is an abundant number, since it is smaller than the sum of its proper divisors (632274732).

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

345827988 is a wasteful number, since it uses less digits than its factorization.

345827988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291125 (or 291117 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 345827988 is about 18596.4509517273. The cubic root of 345827988 is about 701.9185382864.

The spelling of 345827988 in words is "three hundred forty-five million, eight hundred twenty-seven thousand, nine hundred eighty-eight".