20795988 has 24 divisors (see below), whose sum is σ = 48898080. Its totient is φ = 6878560.

The previous prime is 20795969. The next prime is 20795989. The reversal of 20795988 is 88959702.

It is a happy number.

It is a super-2 number, since 2×20795988² = 864946233792288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20795989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5043 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (2037420).

Almost surely, 2^20795988 is an apocalyptic number.

It is an amenable number.

20795988 is an abundant number, since it is smaller than the sum of its proper divisors (28102092).

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

20795988 is a wasteful number, since it uses less digits than its factorization.

20795988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13367 (or 13365 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 20795988 is about 4560.2618345880. The cubic root of 20795988 is about 274.9960903025.

The spelling of 20795988 in words is "twenty million, seven hundred ninety-five thousand, nine hundred eighty-eight".