1090908 has 120 divisors (see below), whose sum is σ = 3604832. Its totient is φ = 279936.

The previous prime is 1090897. The next prime is 1090909. The reversal of 1090908 is 8090901.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090909) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29466 + ... + 29502.

2^1090908 is an apocalyptic number.

1090908 is a gapful number since it is divisible by the number (18) 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 1090908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802416).

1090908 is an abundant number, since it is smaller than the sum of its proper divisors (2513924).

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

1090908 is a wasteful number, since it uses less digits than its factorization.

1090908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1090908 is about 1044.4654135011. The cubic root of 1090908 is about 102.9428155257.

1090908 divided by its sum of digits (27) gives a palindrome (40404).

The spelling of 1090908 in words is "one million, ninety thousand, nine hundred eight".