1239422828 has 24 divisors (see below), whose sum is σ = 2479680000. Its totient is φ = 531002448.

The previous prime is 1239422809. The next prime is 1239422831. The reversal of 1239422828 is 8282249321.

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, 109373 + ... + 120171.

It is an arithmetic number, because the mean of its divisors is an integer number (103320000).

Almost surely, 2^1239422828 is an apocalyptic number.

It is an amenable number.

1239422828 is an abundant number, since it is smaller than the sum of its proper divisors (1240257172).

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

1239422828 is a wasteful number, since it uses less digits than its factorization.

1239422828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14909 (or 14907 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 1239422828 is about 35205.4374777533. The cubic root of 1239422828 is about 1074.1703576803.

The spelling of 1239422828 in words is "one billion, two hundred thirty-nine million, four hundred twenty-two thousand, eight hundred twenty-eight".