1395847220 has 96 divisors (see below), whose sum is σ = 3209746176. Its totient is φ = 507852800.

The previous prime is 1395847183. The next prime is 1395847231. The reversal of 1395847220 is 227485931.

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, 1278875 + ... + 1279965.

It is an arithmetic number, because the mean of its divisors is an integer number (33434856).

Almost surely, 2^1395847220 is an apocalyptic number.

1395847220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1395847220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604873088).

1395847220 is an abundant number, since it is smaller than the sum of its proper divisors (1813898956).

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

1395847220 is a wasteful number, since it uses less digits than its factorization.

1395847220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1395847220 is about 37361.0387971213. The cubic root of 1395847220 is about 1117.5817349176.

The spelling of 1395847220 in words is "one billion, three hundred ninety-five million, eight hundred forty-seven thousand, two hundred twenty".