1634397828 has 24 divisors (see below), whose sum is σ = 4358394432. Its totient is φ = 466970784.

The previous prime is 1634397823. The next prime is 1634397847. The reversal of 1634397828 is 8287934361.

It is a super-2 number, since 2×1634397828² = 5342512520342235168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1634397823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9728475 + ... + 9728642.

It is an arithmetic number, because the mean of its divisors is an integer number (181599768).

Almost surely, 2^1634397828 is an apocalyptic number.

It is an amenable number.

1634397828 is an abundant number, since it is smaller than the sum of its proper divisors (2723996604).

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

1634397828 is a wasteful number, since it uses less digits than its factorization.

1634397828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19457131 (or 19457129 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 1634397828 is about 40427.6864042453. The cubic root of 1634397828 is about 1177.9293927585.

The spelling of 1634397828 in words is "one billion, six hundred thirty-four million, three hundred ninety-seven thousand, eight hundred twenty-eight".