1628709896 has 32 divisors (see below), whose sum is σ = 3378386880. Its totient is φ = 729892800.

The previous prime is 1628709881. The next prime is 1628709917. The reversal of 1628709896 is 6989078261.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124091 + ... + 136586.

It is an arithmetic number, because the mean of its divisors is an integer number (105574590).

Almost surely, 2^1628709896 is an apocalyptic number.

It is an amenable number.

1628709896 is an abundant number, since it is smaller than the sum of its proper divisors (1749676984).

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

1628709896 is a wasteful number, since it uses less digits than its factorization.

1628709896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260765 (or 260761 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 1628709896 is about 40357.2781044510. The cubic root of 1628709896 is about 1176.5613517744.

The spelling of 1628709896 in words is "one billion, six hundred twenty-eight million, seven hundred nine thousand, eight hundred ninety-six".