20029828 has 48 divisors (see below), whose sum is σ = 44060800. Its totient is φ = 7916832.

The previous prime is 20029783. The next prime is 20029831. The reversal of 20029828 is 82892002.

It is a self number, because there is not a number n which added to its sum of digits gives 20029828.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17275 + ... + 18397.

Almost surely, 2^20029828 is an apocalyptic number.

20029828 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 20029828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22030400).

20029828 is an abundant number, since it is smaller than the sum of its proper divisors (24030972).

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

20029828 is a wasteful number, since it uses less digits than its factorization.

20029828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 20029828 is about 4475.4695843006. The cubic root of 20029828 is about 271.5766373783.

The spelling of 20029828 in words is "twenty million, twenty-nine thousand, eight hundred twenty-eight".