881002000 has 40 divisors (see below), whose sum is σ = 2130267672. Its totient is φ = 352400000.

The previous prime is 881001997. The next prime is 881002007. The reversal of 881002000 is 200188.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 140944384 + 740057616 = 11872^2 + 27204^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (881002007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218251 + ... + 222250.

Almost surely, 2^881002000 is an apocalyptic number.

881002000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

881002000 is an abundant number, since it is smaller than the sum of its proper divisors (1249265672).

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

881002000 is a wasteful number, since it uses less digits than its factorization.

881002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440524 (or 440508 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 881002000 is about 29681.6778501486. The cubic root of 881002000 is about 958.6475457800.

Adding to 881002000 its reverse (200188), we get a palindrome (881202188).

It can be divided in two parts, 88100 and 2000, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 881002000 in words is "eight hundred eighty-one million, two thousand".