881974820 has 24 divisors (see below), whose sum is σ = 1853450424. Its totient is φ = 352541696.

The previous prime is 881974817. The next prime is 881974867. The reversal of 881974820 is 28479188.

It can be written as a sum of positive squares in 4 ways, for example, as 22429696 + 859545124 = 4736^2 + 29318^2 .

It is a super-2 number, since 2×881974820² = 1555759166228064800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15092 + ... + 44628.

It is an arithmetic number, because the mean of its divisors is an integer number (77227101).

Almost surely, 2^881974820 is an apocalyptic number.

It is an amenable number.

881974820 is an abundant number, since it is smaller than the sum of its proper divisors (971475604).

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

881974820 is a wasteful number, since it uses less digits than its factorization.

881974820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31039 (or 31037 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 881974820 is about 29698.0608794581. The cubic root of 881974820 is about 959.0002685713. Note that the first 3 decimals are identical.

The spelling of 881974820 in words is "eight hundred eighty-one million, nine hundred seventy-four thousand, eight hundred twenty".