20846728 has 16 divisors (see below), whose sum is σ = 44671680. Its totient is φ = 8934288.

The previous prime is 20846713. The next prime is 20846729. The reversal of 20846728 is 82764802.

It is not an unprimeable number, because it can be changed into a prime (20846729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186076 + ... + 186187.

It is an arithmetic number, because the mean of its divisors is an integer number (2791980).

Almost surely, 2^20846728 is an apocalyptic number.

20846728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20846728 is an abundant number, since it is smaller than the sum of its proper divisors (23824952).

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

20846728 is a wasteful number, since it uses less digits than its factorization.

20846728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372276 (or 372272 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 20846728 is about 4565.8217223190. The cubic root of 20846728 is about 275.2195623939.

The spelling of 20846728 in words is "twenty million, eight hundred forty-six thousand, seven hundred twenty-eight".