20191120 has 40 divisors (see below), whose sum is σ = 47657664. Its totient is φ = 7953792.

The previous prime is 20191117. The next prime is 20191133. The reversal of 20191120 is 2119102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20191094 and 20191103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3477 + ... + 7243.

Almost surely, 2^20191120 is an apocalyptic number.

20191120 is a gapful number since it is divisible by the number (20) 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 20191120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23828832).

20191120 is an abundant number, since it is smaller than the sum of its proper divisors (27466544).

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

20191120 is a wasteful number, since it uses less digits than its factorization.

20191120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847 (or 3841 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 20191120 is about 4493.4530152211. The cubic root of 20191120 is about 272.3036545372.

The spelling of 20191120 in words is "twenty million, one hundred ninety-one thousand, one hundred twenty".