20712888 has 192 divisors, whose sum is σ = 71136000. Its totient is φ = 5552064.

The previous prime is 20712883. The next prime is 20712889. The reversal of 20712888 is 88821702.

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 (20712883) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201045 + ... + 201147.

It is an arithmetic number, because the mean of its divisors is an integer number (370500).

Almost surely, 2^20712888 is an apocalyptic number.

20712888 is a gapful number since it is divisible by the number (28) 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 20712888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35568000).

20712888 is an abundant number, since it is smaller than the sum of its proper divisors (50423112).

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

20712888 is a wasteful number, since it uses less digits than its factorization.

20712888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 20712888 is about 4551.1413952985. The cubic root of 20712888 is about 274.6293099140.

The spelling of 20712888 in words is "twenty million, seven hundred twelve thousand, eight hundred eighty-eight".