11611020 has 48 divisors (see below), whose sum is σ = 33636960. Its totient is φ = 2989056.

The previous prime is 11611013. The next prime is 11611037. The reversal of 11611020 is 2011611.

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 = 11610987 and 11611005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1597 + ... + 5076.

It is an arithmetic number, because the mean of its divisors is an integer number (700770).

Almost surely, 2^11611020 is an apocalyptic number.

11611020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11611020 is an abundant number, since it is smaller than the sum of its proper divisors (22025940).

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

11611020 is a wasteful number, since it uses less digits than its factorization.

11611020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6714 (or 6712 counting only the distinct ones).

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

The square root of 11611020 is about 3407.4946808469. The cubic root of 11611020 is about 226.4419004137.

Adding to 11611020 its reverse (2011611), we get a palindrome (13622631).

The spelling of 11611020 in words is "eleven million, six hundred eleven thousand, twenty".