1428280670 has 32 divisors (see below), whose sum is σ = 2809956096. Its totient is φ = 520358400.

The previous prime is 1428280663. The next prime is 1428280681. The reversal of 1428280670 is 760828241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130241 + ... + 140780.

It is an arithmetic number, because the mean of its divisors is an integer number (87811128).

Almost surely, 2^1428280670 is an apocalyptic number.

1428280670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1428280670 is a deficient number, since it is larger than the sum of its proper divisors (1381675426).

1428280670 is a wasteful number, since it uses less digits than its factorization.

1428280670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271076.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 1428280670 is about 37792.6007308309. The cubic root of 1428280670 is about 1126.1714664734.

The spelling of 1428280670 in words is "one billion, four hundred twenty-eight million, two hundred eighty thousand, six hundred seventy".