20881190232 has 224 divisors, whose sum is σ = 67277210400. Its totient is φ = 5949199872.

The previous prime is 20881190207. The next prime is 20881190249. The reversal of 20881190232 is 23209118802.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 25187994 + ... + 25188822.

Almost surely, 2^20881190232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20881190232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33638605200).

20881190232 is an abundant number, since it is smaller than the sum of its proper divisors (46396020168).

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

20881190232 is an equidigital number, since it uses as much as digits as its factorization.

20881190232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 20881190232 in words is "twenty billion, eight hundred eighty-one million, one hundred ninety thousand, two hundred thirty-two".