20170874880 has 896 divisors, whose sum is σ = 81909757440. Its totient is φ = 4671406080.

The previous prime is 20170874849. The next prime is 20170874881. The reversal of 20170874880 is 8847807102.

20170874880 is a `hidden beast` number, since 20 + 1 + 70 + 87 + 488 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (20170874881) 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, 330670050 + ... + 330670110.

It is an arithmetic number, because the mean of its divisors is an integer number (91417140).

Almost surely, 2^20170874880 is an apocalyptic number.

20170874880 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 20170874880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40954878720).

20170874880 is an abundant number, since it is smaller than the sum of its proper divisors (61738882560).

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

20170874880 is a wasteful number, since it uses less digits than its factorization.

20170874880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The spelling of 20170874880 in words is "twenty billion, one hundred seventy million, eight hundred seventy-four thousand, eight hundred eighty".