1428270228 has 108 divisors (see below), whose sum is σ = 4581656352. Its totient is φ = 370974240.

The previous prime is 1428270227. The next prime is 1428270247. The reversal of 1428270228 is 8220728241.

1428270228 is a `hidden beast` number, since 1 + 428 + 2 + 7 + 0 + 228 = 666.

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 = 1428270192 and 1428270201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428270227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17400 + ... + 56207.

It is an arithmetic number, because the mean of its divisors is an integer number (42422744).

Almost surely, 2^1428270228 is an apocalyptic number.

1428270228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1428270228 is an abundant number, since it is smaller than the sum of its proper divisors (3153386124).

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

1428270228 is a wasteful number, since it uses less digits than its factorization.

1428270228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73642 (or 73630 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 1428270228 is about 37792.4625818430. The cubic root of 1428270228 is about 1126.1687220289.

Adding to 1428270228 its reverse (8220728241), we get a palindrome (9648998469).

The spelling of 1428270228 in words is "one billion, four hundred twenty-eight million, two hundred seventy thousand, two hundred twenty-eight".