20420536248 has 96 divisors (see below), whose sum is σ = 63704309760. Its totient is φ = 5788480320.

The previous prime is 20420536247. The next prime is 20420536249. The reversal of 20420536248 is 84263502402.

20420536248 is a `hidden beast` number, since 2 + 0 + 4 + 20 + 5 + 3 + 624 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20420536247) and next prime (20420536249).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420536247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95508 + ... + 223523.

It is an arithmetic number, because the mean of its divisors is an integer number (663586560).

Almost surely, 2^20420536248 is an apocalyptic number.

20420536248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20420536248 is an abundant number, since it is smaller than the sum of its proper divisors (43283773512).

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

20420536248 is a wasteful number, since it uses less digits than its factorization.

20420536248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319177 (or 319170 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 20420536248 in words is "twenty billion, four hundred twenty million, five hundred thirty-six thousand, two hundred forty-eight".