1428859756 has 12 divisors (see below), whose sum is σ = 2528600760. Its totient is φ = 706402400.

The previous prime is 1428859739. The next prime is 1428859759. The reversal of 1428859756 is 6579588241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1428859697 and 1428859706.

It is not an unprimeable number, because it can be changed into a prime (1428859759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006470 + ... + 2007181.

It is an arithmetic number, because the mean of its divisors is an integer number (210716730).

Almost surely, 2^1428859756 is an apocalyptic number.

It is an amenable number.

1428859756 is a deficient number, since it is larger than the sum of its proper divisors (1099741004).

1428859756 is a wasteful number, since it uses less digits than its factorization.

1428859756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013744 (or 4013742 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 55.

The square root of 1428859756 is about 37800.2613218480. The cubic root of 1428859756 is about 1126.3236452496.

It can be divided in two parts, 1428 and 859756, that added together give a square (861184 = 928²).

The spelling of 1428859756 in words is "one billion, four hundred twenty-eight million, eight hundred fifty-nine thousand, seven hundred fifty-six".