20132928 has 112 divisors (see below), whose sum is σ = 60472320. Its totient is φ = 6566400.

The previous prime is 20132923. The next prime is 20132933. The reversal of 20132928 is 82923102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20132923) and next prime (20132933).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20132923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105313 + ... + 105503.

Almost surely, 2^20132928 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 20132928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30236160).

20132928 is an abundant number, since it is smaller than the sum of its proper divisors (40339392).

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

20132928 is a wasteful number, since it uses less digits than its factorization.

20132928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20132928 is about 4486.9731445597. The cubic root of 20132928 is about 272.0418044166.

The spelling of 20132928 in words is "twenty million, one hundred thirty-two thousand, nine hundred twenty-eight".