20862732 has 48 divisors (see below), whose sum is σ = 53996544. Its totient is φ = 6216000.

The previous prime is 20862731. The next prime is 20862733. The reversal of 20862732 is 23726802.

It is an interprime number because it is at equal distance from previous prime (20862731) and next prime (20862733).

It is a self number, because there is not a number n which added to its sum of digits gives 20862732.

It is not an unprimeable number, because it can be changed into a prime (20862731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6757 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (1124928).

Almost surely, 2^20862732 is an apocalyptic number.

20862732 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 20862732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26998272).

20862732 is an abundant number, since it is smaller than the sum of its proper divisors (33133812).

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

20862732 is a wasteful number, since it uses less digits than its factorization.

20862732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670 (or 2668 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20862732 is about 4567.5739731284. The cubic root of 20862732 is about 275.2899729193.

The spelling of 20862732 in words is "twenty million, eight hundred sixty-two thousand, seven hundred thirty-two".