11621020 has 24 divisors (see below), whose sum is σ = 24515568. Its totient is φ = 4627200.

The previous prime is 11621017. The next prime is 11621023. The reversal of 11621020 is 2012611.

It is an interprime number because it is at equal distance from previous prime (11621017) and next prime (11621023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3615 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (1021482).

Almost surely, 2^11621020 is an apocalyptic number.

11621020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11621020 is an abundant number, since it is smaller than the sum of its proper divisors (12894548).

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

11621020 is a wasteful number, since it uses less digits than its factorization.

11621020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 11621020 is about 3408.9617187642. The cubic root of 11621020 is about 226.5068895142.

Adding to 11621020 its reverse (2012611), we get a palindrome (13633631).

The spelling of 11621020 in words is "eleven million, six hundred twenty-one thousand, twenty".