16872020 has 48 divisors (see below), whose sum is σ = 39408768. Its totient is φ = 6015360.

The previous prime is 16872017. The next prime is 16872047. The reversal of 16872020 is 2027861.

It is a congruent number.

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, 10937 + ... + 12383.

It is an arithmetic number, because the mean of its divisors is an integer number (821016).

Almost surely, 2^16872020 is an apocalyptic number.

16872020 is a gapful number since it is divisible by the number (10) 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 16872020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19704384).

16872020 is an abundant number, since it is smaller than the sum of its proper divisors (22536748).

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

16872020 is a wasteful number, since it uses less digits than its factorization.

16872020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1518 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 16872020 is about 4107.5564512250. The cubic root of 16872020 is about 256.4812926584.

Adding to 16872020 its reverse (2027861), we get a palindrome (18899881).

The spelling of 16872020 in words is "sixteen million, eight hundred seventy-two thousand, twenty".