20727723132 has 36 divisors (see below), whose sum is σ = 53026351560. Its totient is φ = 6825996192.

The previous prime is 20727723131. The next prime is 20727723157. The reversal of 20727723132 is 23132772702.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20727723131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3465507 + ... + 3471482.

It is an arithmetic number, because the mean of its divisors is an integer number (1472954210).

Almost surely, 2^20727723132 is an apocalyptic number.

It is an amenable number.

20727723132 is an abundant number, since it is smaller than the sum of its proper divisors (32298628428).

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

20727723132 is a wasteful number, since it uses less digits than its factorization.

20727723132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937082 (or 6937077 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The spelling of 20727723132 in words is "twenty billion, seven hundred twenty-seven million, seven hundred twenty-three thousand, one hundred thirty-two".