1379520828 has 96 divisors (see below), whose sum is σ = 4327948800. Its totient is φ = 370960128.

The previous prime is 1379520817. The next prime is 1379520847. The reversal of 1379520828 is 8280259731.

It is a happy number.

It is a super-3 number, since 3×1379520828³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40818 + ... + 66521.

It is an arithmetic number, because the mean of its divisors is an integer number (45082800).

Almost surely, 2^1379520828 is an apocalyptic number.

1379520828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1379520828 is an abundant number, since it is smaller than the sum of its proper divisors (2948427972).

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

1379520828 is a wasteful number, since it uses less digits than its factorization.

1379520828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107376 (or 107368 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1379520828 is about 37141.9012437436. The cubic root of 1379520828 is about 1113.2074068034.

The spelling of 1379520828 in words is "one billion, three hundred seventy-nine million, five hundred twenty thousand, eight hundred twenty-eight".