20732712 has 128 divisors (see below), whose sum is σ = 69672960. Its totient is φ = 4965120.

The previous prime is 20732693. The next prime is 20732717. The reversal of 20732712 is 21723702.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20732717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23593 + ... + 24455.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^20732712 is an apocalyptic number.

20732712 is a gapful number since it is divisible by the number (22) 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 20732712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34836480).

20732712 is an abundant number, since it is smaller than the sum of its proper divisors (48940248).

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

20732712 is a wasteful number, since it uses less digits than its factorization.

20732712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20732712 is about 4553.3187896303. The cubic root of 20732712 is about 274.7168965331.

The spelling of 20732712 in words is "twenty million, seven hundred thirty-two thousand, seven hundred twelve".