20613792 has 72 divisors (see below), whose sum is σ = 57558816. Its totient is φ = 6458368.

The previous prime is 20613787. The next prime is 20613793. The reversal of 20613792 is 29731602.

It is not an unprimeable number, because it can be changed into a prime (20613793) 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, 27373 + ... + 28115.

It is an arithmetic number, because the mean of its divisors is an integer number (799428).

Almost surely, 2^20613792 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 20613792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28779408).

20613792 is an abundant number, since it is smaller than the sum of its proper divisors (36945024).

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

20613792 is a wasteful number, since it uses less digits than its factorization.

20613792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20613792 is about 4540.2414032736. The cubic root of 20613792 is about 274.1906428939.

The spelling of 20613792 in words is "twenty million, six hundred thirteen thousand, seven hundred ninety-two".