1375808 has 56 divisors (see below), whose sum is σ = 3243072. Its totient is φ = 566784.

The previous prime is 1375807. The next prime is 1375813. The reversal of 1375808 is 8085731.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (1375807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16535 + ... + 16617.

It is an arithmetic number, because the mean of its divisors is an integer number (57912).

2^1375808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621536).

1375808 is an abundant number, since it is smaller than the sum of its proper divisors (1867264).

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

1375808 is an equidigital number, since it uses as much as digits as its factorization.

1375808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1375808 is about 1172.9484217134. The cubic root of 1375808 is about 111.2207817895.

The spelling of 1375808 in words is "one million, three hundred seventy-five thousand, eight hundred eight".