345554220 has 96 divisors (see below), whose sum is σ = 1064480256. Its totient is φ = 83751360.

The previous prime is 345554219. The next prime is 345554249. The reversal of 345554220 is 22455543.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 77697 + ... + 82023.

It is an arithmetic number, because the mean of its divisors is an integer number (11088336).

Almost surely, 2^345554220 is an apocalyptic number.

345554220 is a gapful number since it is divisible by the number (30) 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 345554220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (532240128).

345554220 is an abundant number, since it is smaller than the sum of its proper divisors (718926036).

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

345554220 is a wasteful number, since it uses less digits than its factorization.

345554220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372 (or 4348 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 345554220 is about 18589.0887350618. The cubic root of 345554220 is about 701.7332693370.

It can be divided in two parts, 3455 and 54220, that added together give a palindrome (57675).

The spelling of 345554220 in words is "three hundred forty-five million, five hundred fifty-four thousand, two hundred twenty".