11172020 has 48 divisors (see below), whose sum is σ = 24796800. Its totient is φ = 4219776.

The previous prime is 11172011. The next prime is 11172023. The reversal of 11172020 is 2027111.

11172020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11171986 and 11172004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68459 + ... + 68621.

It is an arithmetic number, because the mean of its divisors is an integer number (516600).

Almost surely, 2^11172020 is an apocalyptic number.

11172020 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 11172020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12398400).

11172020 is an abundant number, since it is smaller than the sum of its proper divisors (13624780).

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

11172020 is a wasteful number, since it uses less digits than its factorization.

11172020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 11172020 is about 3342.4571799800. The cubic root of 11172020 is about 223.5513180692.

Adding to 11172020 its reverse (2027111), we get a palindrome (13199131).

The spelling of 11172020 in words is "eleven million, one hundred seventy-two thousand, twenty".