871135998 has 32 divisors (see below), whose sum is σ = 1875013920. Its totient is φ = 268815360.

The previous prime is 871135933. The next prime is 871135999. The reversal of 871135998 is 899531178.

It is a super-2 number, since 2×871135998² = 1517755854022912008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 871135998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871135999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63783 + ... + 76226.

It is an arithmetic number, because the mean of its divisors is an integer number (58594185).

Almost surely, 2^871135998 is an apocalyptic number.

871135998 is an abundant number, since it is smaller than the sum of its proper divisors (1003877922).

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

871135998 is a wasteful number, since it uses less digits than its factorization.

871135998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140092.

The product of its digits is 544320, while the sum is 51.

The square root of 871135998 is about 29515.0130950335. The cubic root of 871135998 is about 955.0555957510.

The spelling of 871135998 in words is "eight hundred seventy-one million, one hundred thirty-five thousand, nine hundred ninety-eight".