878611940 has 48 divisors (see below), whose sum is σ = 1887861360. Its totient is φ = 343388160.

The previous prime is 878611931. The next prime is 878611949. The reversal of 878611940 is 49116878.

It is an interprime number because it is at equal distance from previous prime (878611931) and next prime (878611949).

It can be written as a sum of positive squares in 8 ways, for example, as 2096704 + 876515236 = 1448^2 + 29606^2 .

It is a super-2 number, since 2×878611940² = 1543917882221127200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 878611891 and 878611900.

It is not an unprimeable number, because it can be changed into a prime (878611949) 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, 156380 + ... + 161900.

It is an arithmetic number, because the mean of its divisors is an integer number (39330445).

Almost surely, 2^878611940 is an apocalyptic number.

It is an amenable number.

878611940 is an abundant number, since it is smaller than the sum of its proper divisors (1009249420).

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

878611940 is a wasteful number, since it uses less digits than its factorization.

878611940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712 (or 5710 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 878611940 is about 29641.3889688051. The cubic root of 878611940 is about 957.7798594305.

The spelling of 878611940 in words is "eight hundred seventy-eight million, six hundred eleven thousand, nine hundred forty".