3551361228 has 144 divisors (see below), whose sum is σ = 9571161600. Its totient is φ = 1108356480.

The previous prime is 3551361169. The next prime is 3551361347. The reversal of 3551361228 is 8221631553.

3551361228 is a `hidden beast` number, since 3 + 5 + 5 + 13 + 612 + 28 = 666.

It is a super-2 number, since 2×3551361228² = 25224333143483335968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3551361192 and 3551361201.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10729023 + ... + 10729353.

It is an arithmetic number, because the mean of its divisors is an integer number (66466400).

Almost surely, 2^3551361228 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 3551361228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4785580800).

3551361228 is an abundant number, since it is smaller than the sum of its proper divisors (6019800372).

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

3551361228 is a wasteful number, since it uses less digits than its factorization.

3551361228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 647 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 3551361228 is about 59593.2985158566. The cubic root of 3551361228 is about 1525.6852572765.

The spelling of 3551361228 in words is "three billion, five hundred fifty-one million, three hundred sixty-one thousand, two hundred twenty-eight".