1395880 has 16 divisors (see below), whose sum is σ = 3140820. Its totient is φ = 558336.

The previous prime is 1395871. The next prime is 1395883. The reversal of 1395880 is 885931.

It can be written as a sum of positive squares in 2 ways, for example, as 1214404 + 181476 = 1102^2 + 426^2 .

It is not an unprimeable number, because it can be changed into a prime (1395883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17409 + ... + 17488.

2^1395880 is an apocalyptic number.

1395880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1395880 is an abundant number, since it is smaller than the sum of its proper divisors (1744940).

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

1395880 is a wasteful number, since it uses less digits than its factorization.

1395880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34908 (or 34904 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1395880 is about 1181.4736560753. The cubic root of 1395880 is about 111.7590483259.

The spelling of 1395880 in words is "one million, three hundred ninety-five thousand, eight hundred eighty".