867124840 has 32 divisors (see below), whose sum is σ = 2035860480. Its totient is φ = 331769152.

The previous prime is 867124801. The next prime is 867124847. The reversal of 867124840 is 48421768.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 867124793 and 867124802.

It is not an unprimeable number, because it can be changed into a prime (867124847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470344 + ... + 472183.

It is an arithmetic number, because the mean of its divisors is an integer number (63620640).

Almost surely, 2^867124840 is an apocalyptic number.

It is an amenable number.

867124840 is an abundant number, since it is smaller than the sum of its proper divisors (1168735640).

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

867124840 is a wasteful number, since it uses less digits than its factorization.

867124840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942561 (or 942557 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 867124840 is about 29446.9835467064. The cubic root of 867124840 is about 953.5874844695.

The spelling of 867124840 in words is "eight hundred sixty-seven million, one hundred twenty-four thousand, eight hundred forty".