345221016 has 64 divisors (see below), whose sum is σ = 1007354880. Its totient is φ = 96533760.

The previous prime is 345220973. The next prime is 345221033. The reversal of 345221016 is 610122543.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 13965 + ... + 29756.

It is an arithmetic number, because the mean of its divisors is an integer number (15739920).

Almost surely, 2^345221016 is an apocalyptic number.

It is an amenable number.

345221016 is an abundant number, since it is smaller than the sum of its proper divisors (662133864).

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

345221016 is a wasteful number, since it uses less digits than its factorization.

345221016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43784 (or 43780 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 345221016 is about 18580.1242191757. The cubic root of 345221016 is about 701.5076457701.

Adding to 345221016 its reverse (610122543), we get a palindrome (955343559).

The spelling of 345221016 in words is "three hundred forty-five million, two hundred twenty-one thousand, sixteen".