876321540 has 36 divisors (see below), whose sum is σ = 2658175884. Its totient is φ = 233685696.

The previous prime is 876321517. The next prime is 876321587. The reversal of 876321540 is 45123678.

876321540 is a `hidden beast` number, since 8 + 7 + 632 + 15 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 635947524 + 240374016 = 25218^2 + 15504^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 876321495 and 876321504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2434047 + ... + 2434406.

It is an arithmetic number, because the mean of its divisors is an integer number (73838219).

Almost surely, 2^876321540 is an apocalyptic number.

It is an amenable number.

876321540 is an abundant number, since it is smaller than the sum of its proper divisors (1781854344).

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

876321540 is a wasteful number, since it uses less digits than its factorization.

876321540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868468 (or 4868463 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 876321540 is about 29602.7285904526. The cubic root of 876321540 is about 956.9468758488.

It can be divided in two parts, 8763 and 21540, that added together give a palindrome (30303).

The spelling of 876321540 in words is "eight hundred seventy-six million, three hundred twenty-one thousand, five hundred forty".