20829020 has 12 divisors (see below), whose sum is σ = 43740984. Its totient is φ = 8331600.

The previous prime is 20829019. The next prime is 20829023. The reversal of 20829020 is 2092802.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20829023) 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, 520706 + ... + 520745.

It is an arithmetic number, because the mean of its divisors is an integer number (3645082).

Almost surely, 2^20829020 is an apocalyptic number.

20829020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20829020 is an abundant number, since it is smaller than the sum of its proper divisors (22911964).

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

20829020 is a wasteful number, since it uses less digits than its factorization.

20829020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041460 (or 1041458 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 20829020 is about 4563.8821194242. The cubic root of 20829020 is about 275.1416130134.

The spelling of 20829020 in words is "twenty million, eight hundred twenty-nine thousand, twenty".