20051248 has 20 divisors (see below), whose sum is σ = 44399440. Its totient is φ = 8593344.

The previous prime is 20051243. The next prime is 20051257. The reversal of 20051248 is 84215002.

It is not an unprimeable number, because it can be changed into a prime (20051243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89403 + ... + 89626.

It is an arithmetic number, because the mean of its divisors is an integer number (2219972).

Almost surely, 2^20051248 is an apocalyptic number.

20051248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20051248 is an abundant number, since it is smaller than the sum of its proper divisors (24348192).

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

20051248 is a wasteful number, since it uses less digits than its factorization.

20051248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179044 (or 179038 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20051248 is about 4477.8619898340. The cubic root of 20051248 is about 271.6734113690.

The spelling of 20051248 in words is "twenty million, fifty-one thousand, two hundred forty-eight".