1428812156 has 12 divisors (see below), whose sum is σ = 2508957192. Its totient is φ = 711967248.

The previous prime is 1428812129. The next prime is 1428812159. The reversal of 1428812156 is 6512188241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428812159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608390 + ... + 610733.

It is an arithmetic number, because the mean of its divisors is an integer number (209079766).

Almost surely, 2^1428812156 is an apocalyptic number.

It is an amenable number.

1428812156 is a deficient number, since it is larger than the sum of its proper divisors (1080145036).

1428812156 is a wasteful number, since it uses less digits than its factorization.

1428812156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219420 (or 1219418 counting only the distinct ones).

The product of its digits is 30720, while the sum is 38.

The square root of 1428812156 is about 37799.6316913274. The cubic root of 1428812156 is about 1126.3111379337.

The spelling of 1428812156 in words is "one billion, four hundred twenty-eight million, eight hundred twelve thousand, one hundred fifty-six".