881720478 has 40 divisors (see below), whose sum is σ = 1988348472. Its totient is φ = 292026384.

The previous prime is 881720467. The next prime is 881720491. The reversal of 881720478 is 874027188.

881720478 is a `hidden beast` number, since 8 + 8 + 172 + 0 + 478 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8101 + ... + 42767.

Almost surely, 2^881720478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 881720478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994174236).

881720478 is an abundant number, since it is smaller than the sum of its proper divisors (1106627994).

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

881720478 is a wasteful number, since it uses less digits than its factorization.

881720478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34838 (or 34829 counting only the distinct ones).

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

The square root of 881720478 is about 29693.7784392623. The cubic root of 881720478 is about 958.9080748975.

The spelling of 881720478 in words is "eight hundred eighty-one million, seven hundred twenty thousand, four hundred seventy-eight".