1396324770 has 128 divisors (see below), whose sum is σ = 3577271040. Its totient is φ = 348257280.

The previous prime is 1396324747. The next prime is 1396324777. The reversal of 1396324770 is 774236931.

It is not an unprimeable number, because it can be changed into a prime (1396324777) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4404652 + ... + 4404968.

It is an arithmetic number, because the mean of its divisors is an integer number (27947430).

Almost surely, 2^1396324770 is an apocalyptic number.

1396324770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396324770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788635520).

1396324770 is an abundant number, since it is smaller than the sum of its proper divisors (2180946270).

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

1396324770 is a wasteful number, since it uses less digits than its factorization.

1396324770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 1396324770 is about 37367.4292666755. The cubic root of 1396324770 is about 1117.7091701406.

The spelling of 1396324770 in words is "one billion, three hundred ninety-six million, three hundred twenty-four thousand, seven hundred seventy".