862440128 has 56 divisors (see below), whose sum is σ = 1871136720. Its totient is φ = 391147520.

The previous prime is 862440127. The next prime is 862440149. The reversal of 862440128 is 821044268.

862440128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (862440127) 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, 399500 + ... + 401652.

Almost surely, 2^862440128 is an apocalyptic number.

862440128 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 862440128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935568360).

862440128 is an abundant number, since it is smaller than the sum of its proper divisors (1008696592).

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

862440128 is a wasteful number, since it uses less digits than its factorization.

862440128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 862440128 is about 29367.3309648664. The cubic root of 862440128 is about 951.8671047692.

The spelling of 862440128 in words is "eight hundred sixty-two million, four hundred forty thousand, one hundred twenty-eight".