871854540 has 48 divisors (see below), whose sum is σ = 2519946240. Its totient is φ = 224994240.

The previous prime is 871854499. The next prime is 871854547. The reversal of 871854540 is 45458178.

It is a super-2 number, since 2×871854540² = 1520260677837223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 871854492 and 871854501.

It is not an unprimeable number, because it can be changed into a prime (871854547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232510 + ... + 236229.

It is an arithmetic number, because the mean of its divisors is an integer number (52498880).

Almost surely, 2^871854540 is an apocalyptic number.

It is an amenable number.

871854540 is an abundant number, since it is smaller than the sum of its proper divisors (1648091700).

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

871854540 is a wasteful number, since it uses less digits than its factorization.

871854540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468782 (or 468780 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 871854540 is about 29527.1830691653. The cubic root of 871854540 is about 955.3181108141.

The spelling of 871854540 in words is "eight hundred seventy-one million, eight hundred fifty-four thousand, five hundred forty".