1000643424 has 48 divisors (see below), whose sum is σ = 2865481920. Its totient is φ = 303224960.

The previous prime is 1000643419. The next prime is 1000643453. The reversal of 1000643424 is 4243460001.

1000643424 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 (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1000643394 and 1000643403.

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, 472734 + ... + 474845.

It is an arithmetic number, because the mean of its divisors is an integer number (59697540).

Almost surely, 2^1000643424 is an apocalyptic number.

It is an amenable number.

1000643424 is an abundant number, since it is smaller than the sum of its proper divisors (1864838496).

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

1000643424 is a wasteful number, since it uses less digits than its factorization.

1000643424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947603 (or 947595 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1000643424 is about 31632.9483924594. The cubic root of 1000643424 is about 1000.2144286837.

The spelling of 1000643424 in words is "one billion, six hundred forty-three thousand, four hundred twenty-four".