887131440 has 200 divisors, whose sum is σ = 3318464688. Its totient is φ = 218350080.

The previous prime is 887131429. The next prime is 887131477. The reversal of 887131440 is 44131788.

887131440 is a `hidden beast` number, since 8 + 87 + 131 + 440 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 887131395 and 887131404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 78975 + ... + 89505.

Almost surely, 2^887131440 is an apocalyptic number.

887131440 is a gapful number since it is divisible by the number (80) 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 887131440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659232344).

887131440 is an abundant number, since it is smaller than the sum of its proper divisors (2431333248).

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

887131440 is a wasteful number, since it uses less digits than its factorization.

887131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10569 (or 10554 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 887131440 is about 29784.7518035655. The cubic root of 887131440 is about 960.8656254868.

The spelling of 887131440 in words is "eight hundred eighty-seven million, one hundred thirty-one thousand, four hundred forty".