20798624 has 96 divisors (see below), whose sum is σ = 53415936. Its totient is φ = 7729920.

The previous prime is 20798623. The next prime is 20798639. The reversal of 20798624 is 42689702.

It is not an unprimeable number, because it can be changed into a prime (20798623) 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, 56489 + ... + 56855.

It is an arithmetic number, because the mean of its divisors is an integer number (556416).

Almost surely, 2^20798624 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 20798624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26707968).

20798624 is an abundant number, since it is smaller than the sum of its proper divisors (32617312).

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

20798624 is a wasteful number, since it uses less digits than its factorization.

20798624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 20798624 is about 4560.5508439223. The cubic root of 20798624 is about 275.0077088748.

The spelling of 20798624 in words is "twenty million, seven hundred ninety-eight thousand, six hundred twenty-four".