867390128 has 40 divisors (see below), whose sum is σ = 1929846720. Its totient is φ = 373515840.

The previous prime is 867390127. The next prime is 867390197. The reversal of 867390128 is 821093768.

867390128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (867390127) 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, 126350 + ... + 133037.

It is an arithmetic number, because the mean of its divisors is an integer number (48246168).

Almost surely, 2^867390128 is an apocalyptic number.

867390128 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

867390128 is an abundant number, since it is smaller than the sum of its proper divisors (1062456592).

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

867390128 is a wasteful number, since it uses less digits than its factorization.

867390128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259425 (or 259419 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 867390128 is about 29451.4877043588. The cubic root of 867390128 is about 953.6847213420.

The spelling of 867390128 in words is "eight hundred sixty-seven million, three hundred ninety thousand, one hundred twenty-eight".