1405328228 has 24 divisors (see below), whose sum is σ = 2532663672. Its totient is φ = 681813504.

The previous prime is 1405328227. The next prime is 1405328233. The reversal of 1405328228 is 8228235041.

It can be written as a sum of positive squares in 4 ways, for example, as 143089444 + 1262238784 = 11962^2 + 35528^2 .

It is not an unprimeable number, because it can be changed into a prime (1405328227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42476 + ... + 67932.

It is an arithmetic number, because the mean of its divisors is an integer number (105527653).

Almost surely, 2^1405328228 is an apocalyptic number.

It is an amenable number.

1405328228 is a deficient number, since it is larger than the sum of its proper divisors (1127335444).

1405328228 is a wasteful number, since it uses less digits than its factorization.

1405328228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25871 (or 25869 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 1405328228 is about 37487.7076919889. The cubic root of 1405328228 is about 1120.1063430062.

The spelling of 1405328228 in words is "one billion, four hundred five million, three hundred twenty-eight thousand, two hundred twenty-eight".