1090620 has 72 divisors (see below), whose sum is σ = 3393936. Its totient is φ = 283392.

The previous prime is 1090613. The next prime is 1090627. The reversal of 1090620 is 260901.

It is an interprime number because it is at equal distance from previous prime (1090613) and next prime (1090627).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1090593 and 1090602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090627) 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, 13099 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (47138).

2^1090620 is an apocalyptic number.

1090620 is a gapful number since it is divisible by the number (10) 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 1090620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696968).

1090620 is an abundant number, since it is smaller than the sum of its proper divisors (2303316).

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

1090620 is a wasteful number, since it uses less digits than its factorization.

1090620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1090620 is about 1044.3275348280. The cubic root of 1090620 is about 102.9337557516.

The spelling of 1090620 in words is "one million, ninety thousand, six hundred twenty".