11723432020 has 24 divisors (see below), whose sum is σ = 24666302304. Its totient is φ = 4680402336.

The previous prime is 11723432011. The next prime is 11723432023. The reversal of 11723432020 is 2023432711.

It is a happy number.

It is a super-2 number, since 2×11723432020² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11723432023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549934 + ... + 570853.

It is an arithmetic number, because the mean of its divisors is an integer number (1027762596).

Almost surely, 2^11723432020 is an apocalyptic number.

11723432020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11723432020 is an abundant number, since it is smaller than the sum of its proper divisors (12942870284).

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

11723432020 is a wasteful number, since it uses less digits than its factorization.

11723432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121319 (or 1121317 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 11723432020 its reverse (2023432711), we get a palindrome (13746864731).

The spelling of 11723432020 in words is "eleven billion, seven hundred twenty-three million, four hundred thirty-two thousand, twenty".