1395810 has 48 divisors (see below), whose sum is σ = 3911544. Its totient is φ = 343296.

The previous prime is 1395809. The next prime is 1395817. The reversal of 1395810 is 185931.

It can be written as a sum of positive squares in 4 ways, for example, as 881721 + 514089 = 939^2 + 717^2 .

It is a super-2 number, since 2×1395810² = 3896571112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1395817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 574 + ... + 1766.

2^1395810 is an apocalyptic number.

1395810 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 1395810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1955772).

1395810 is an abundant number, since it is smaller than the sum of its proper divisors (2515734).

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

1395810 is a wasteful number, since it uses less digits than its factorization.

1395810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1395810 is about 1181.4440316833. Note that the first 3 decimals coincide. The cubic root of 1395810 is about 111.7571801461.

The spelling of 1395810 in words is "one million, three hundred ninety-five thousand, eight hundred ten".