1395708720 has 160 divisors (see below), whose sum is σ = 5028963840. Its totient is φ = 313589760.

The previous prime is 1395708719. The next prime is 1395708733. The reversal of 1395708720 is 278075931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92080 + ... + 106160.

It is an arithmetic number, because the mean of its divisors is an integer number (31431024).

Almost surely, 2^1395708720 is an apocalyptic number.

1395708720 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 1395708720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2514481920).

1395708720 is an abundant number, since it is smaller than the sum of its proper divisors (3633255120).

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

1395708720 is a wasteful number, since it uses less digits than its factorization.

1395708720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14163 (or 14157 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 1395708720 is about 37359.1852159546. The cubic root of 1395708720 is about 1117.5447704638.

The spelling of 1395708720 in words is "one billion, three hundred ninety-five million, seven hundred eight thousand, seven hundred twenty".