20995344 has 60 divisors (see below), whose sum is σ = 59121712. Its totient is φ = 6955200.

The previous prime is 20995307. The next prime is 20995349. The reversal of 20995344 is 44359902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20995299 and 20995308.

It is not an unprimeable number, because it can be changed into a prime (20995349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30039 + ... + 30729.

Almost surely, 2^20995344 is an apocalyptic number.

20995344 is a gapful number since it is divisible by the number (24) 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 20995344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29560856).

20995344 is an abundant number, since it is smaller than the sum of its proper divisors (38126368).

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

20995344 is a wasteful number, since it uses less digits than its factorization.

20995344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 20995344 is about 4582.0676555459. The cubic root of 20995344 is about 275.8720263676.

The spelling of 20995344 in words is "twenty million, nine hundred ninety-five thousand, three hundred forty-four".