1397284824 has 128 divisors (see below), whose sum is σ = 3938457600. Its totient is φ = 410158080.

The previous prime is 1397284817. The next prime is 1397284841. The reversal of 1397284824 is 4284827931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 705067 + ... + 707045.

It is an arithmetic number, because the mean of its divisors is an integer number (30769200).

Almost surely, 2^1397284824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397284824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969228800).

1397284824 is an abundant number, since it is smaller than the sum of its proper divisors (2541172776).

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

1397284824 is a wasteful number, since it uses less digits than its factorization.

1397284824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105 (or 2101 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 1397284824 is about 37380.2731932232. The cubic root of 1397284824 is about 1117.9652746769.

The spelling of 1397284824 in words is "one billion, three hundred ninety-seven million, two hundred eighty-four thousand, eight hundred twenty-four".