745800228 has 18 divisors (see below), whose sum is σ = 1885217334. Its totient is φ = 248600064.

The previous prime is 745800227. The next prime is 745800229. The reversal of 745800228 is 822008547.

It is a happy number.

745800228 is a `hidden beast` number, since 74 + 580 + 0 + 2 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (745800227) and next prime (745800229).

It can be written as a sum of positive squares in only one way, i.e., 674025444 + 71774784 = 25962^2 + 8472^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 20716673 = 745800228 / (7 + 4 + 5 + 8 + 0 + 0 + 2 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 745800192 and 745800201.

It is not an unprimeable number, because it can be changed into a prime (745800227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10358301 + ... + 10358372.

Almost surely, 2^745800228 is an apocalyptic number.

It is an amenable number.

745800228 is an abundant number, since it is smaller than the sum of its proper divisors (1139417106).

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

745800228 is a wasteful number, since it uses less digits than its factorization.

745800228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20716683 (or 20716678 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 745800228 is about 27309.3432363358. The cubic root of 745800228 is about 906.8612338948.

The spelling of 745800228 in words is "seven hundred forty-five million, eight hundred thousand, two hundred twenty-eight".