20846070 has 144 divisors (see below), whose sum is σ = 65622960. Its totient is φ = 4572288.

The previous prime is 20846069. The next prime is 20846087. The reversal of 20846070 is 7064802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 127809 + ... + 127971.

It is an arithmetic number, because the mean of its divisors is an integer number (455715).

Almost surely, 2^20846070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20846070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32811480).

20846070 is an abundant number, since it is smaller than the sum of its proper divisors (44776890).

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

20846070 is a wasteful number, since it uses less digits than its factorization.

20846070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20846070 is about 4565.7496646224. The cubic root of 20846070 is about 275.2166667136.

The spelling of 20846070 in words is "twenty million, eight hundred forty-six thousand, seventy".