20755944 has 96 divisors (see below), whose sum is σ = 62337600. Its totient is φ = 6186240.

The previous prime is 20755937. The next prime is 20755951. The reversal of 20755944 is 44955702.

It is an interprime number because it is at equal distance from previous prime (20755937) and next prime (20755951).

It is a super-2 number, since 2×20755944² = 861618422662272, which contains 22 as substring.

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 = 20755899 and 20755908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57637 + ... + 57995.

It is an arithmetic number, because the mean of its divisors is an integer number (649350).

Almost surely, 2^20755944 is an apocalyptic number.

20755944 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 20755944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31168800).

20755944 is an abundant number, since it is smaller than the sum of its proper divisors (41581656).

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

20755944 is a wasteful number, since it uses less digits than its factorization.

20755944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 20755944 is about 4555.8691816162. The cubic root of 20755944 is about 274.8194693909.

The spelling of 20755944 in words is "twenty million, seven hundred fifty-five thousand, nine hundred forty-four".