1137808 has 20 divisors (see below), whose sum is σ = 2519680. Its totient is φ = 487584.

The previous prime is 1137803. The next prime is 1137809. The reversal of 1137808 is 8087311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137803) 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, 4968 + ... + 5191.

It is an arithmetic number, because the mean of its divisors is an integer number (125984).

2^1137808 is an apocalyptic number.

It is an amenable number.

1137808 is an abundant number, since it is smaller than the sum of its proper divisors (1381872).

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

1137808 is a wasteful number, since it uses less digits than its factorization.

1137808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10174 (or 10168 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1137808 is about 1066.6808332393. The cubic root of 1137808 is about 104.3973947667.

It can be divided in two parts, 113 and 7808, that added together give a square (7921 = 89²).

The spelling of 1137808 in words is "one million, one hundred thirty-seven thousand, eight hundred eight".