354221560 has 128 divisors (see below), whose sum is σ = 1046131200. Its totient is φ = 104578560.

The previous prime is 354221557. The next prime is 354221599. The reversal of 354221560 is 65122453.

It is a super-3 number, since 3×354221560³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 55494 + ... + 61546.

It is an arithmetic number, because the mean of its divisors is an integer number (8172900).

Almost surely, 2^354221560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 354221560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523065600).

354221560 is an abundant number, since it is smaller than the sum of its proper divisors (691909640).

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

354221560 is a wasteful number, since it uses less digits than its factorization.

354221560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101 (or 6097 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 354221560 is about 18820.7746918133. The cubic root of 354221560 is about 707.5519471403.

The spelling of 354221560 in words is "three hundred fifty-four million, two hundred twenty-one thousand, five hundred sixty".