1628297898 has 32 divisors (see below), whose sum is σ = 3297127680. Its totient is φ = 536025600.

The previous prime is 1628297873. The next prime is 1628297921. The reversal of 1628297898 is 8987928261.

It is a super-3 number, since 3×1628297898³ (a number of 29 digits) contains 333 as substring.

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, 691423 + ... + 693773.

It is an arithmetic number, because the mean of its divisors is an integer number (103035240).

Almost surely, 2^1628297898 is an apocalyptic number.

1628297898 is an abundant number, since it is smaller than the sum of its proper divisors (1668829782).

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

1628297898 is a wasteful number, since it uses less digits than its factorization.

1628297898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742.

The product of its digits is 6967296, while the sum is 60.

The square root of 1628297898 is about 40352.1733987155. The cubic root of 1628297898 is about 1176.4621358645.

The spelling of 1628297898 in words is "one billion, six hundred twenty-eight million, two hundred ninety-seven thousand, eight hundred ninety-eight".