862240640 has 64 divisors (see below), whose sum is σ = 2065059360. Its totient is φ = 344266752.

The previous prime is 862240627. The next prime is 862240651. The reversal of 862240640 is 46042268.

It is a happy number.

862240640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 862240597 and 862240606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525902 + ... + 527538.

Almost surely, 2^862240640 is an apocalyptic number.

862240640 is a gapful number since it is divisible by the number (80) 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 862240640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032529680).

862240640 is an abundant number, since it is smaller than the sum of its proper divisors (1202818720).

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

862240640 is a wasteful number, since it uses less digits than its factorization.

862240640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 862240640 is about 29363.9343412970. The cubic root of 862240640 is about 951.7937080964.

The spelling of 862240640 in words is "eight hundred sixty-two million, two hundred forty thousand, six hundred forty".