20886213420 has 192 divisors, whose sum is σ = 68024033280. Its totient is φ = 5313772800.

The previous prime is 20886213419. The next prime is 20886213427. The reversal of 20886213420 is 2431268802.

20886213420 is a `hidden beast` number, since 2 + 0 + 8 + 8 + 621 + 3 + 4 + 20 = 666.

It is a super-3 number, since 3×20886213420³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is not an unprimeable number, because it can be changed into a prime (20886213427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1179754 + ... + 1197326.

It is an arithmetic number, because the mean of its divisors is an integer number (354291840).

Almost surely, 2^20886213420 is an apocalyptic number.

20886213420 is a gapful number since it is divisible by the number (20) 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 20886213420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34012016640).

20886213420 is an abundant number, since it is smaller than the sum of its proper divisors (47137819860).

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

20886213420 is a wasteful number, since it uses less digits than its factorization.

20886213420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17693 (or 17685 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 20886213420 in words is "twenty billion, eight hundred eighty-six million, two hundred thirteen thousand, four hundred twenty".