1111620 has 48 divisors (see below), whose sum is σ = 3161088. Its totient is φ = 291840.

The previous prime is 1111577. The next prime is 1111637. The reversal of 1111620 is 261111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1111596 and 1111605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5725 + ... + 5915.

It is an arithmetic number, because the mean of its divisors is an integer number (65856).

2^1111620 is an apocalyptic number.

1111620 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 1111620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580544).

1111620 is an abundant number, since it is smaller than the sum of its proper divisors (2049468).

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

1111620 is a wasteful number, since it uses less digits than its factorization.

1111620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1111620 is about 1054.3339129517. Note that the first 3 decimals coincide. The cubic root of 1111620 is about 103.5902268127.

Adding to 1111620 its reverse (261111), we get a palindrome (1372731).

The spelling of 1111620 in words is "one million, one hundred eleven thousand, six hundred twenty".