20597248 has 60 divisors (see below), whose sum is σ = 47931642. Its totient is φ = 8816640.

The previous prime is 20597209. The next prime is 20597267. The reversal of 20597248 is 84279502.

It can be written as a sum of positive squares in only one way, i.e., 19079424 + 1517824 = 4368^2 + 1232^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24678 + ... + 25498.

Almost surely, 2^20597248 is an apocalyptic number.

20597248 is a gapful number since it is divisible by the number (28) 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 20597248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23965821).

20597248 is an abundant number, since it is smaller than the sum of its proper divisors (27334394).

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

20597248 is an frugal number, since it uses more digits than its factorization.

20597248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 20597248 is about 4538.4191080155. The cubic root of 20597248 is about 274.1172709160.

The spelling of 20597248 in words is "twenty million, five hundred ninety-seven thousand, two hundred forty-eight".