1028641424 has 10 divisors (see below), whose sum is σ = 1992992790. Its totient is φ = 514320704.

The previous prime is 1028641391. The next prime is 1028641433. The reversal of 1028641424 is 4241468201.

It can be written as a sum of positive squares in only one way, i.e., 747475600 + 281165824 = 27340^2 + 16768^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32145029 + ... + 32145060.

It is an arithmetic number, because the mean of its divisors is an integer number (199299279).

Almost surely, 2^1028641424 is an apocalyptic number.

It is an amenable number.

1028641424 is a deficient number, since it is larger than the sum of its proper divisors (964351366).

1028641424 is an equidigital number, since it uses as much as digits as its factorization.

1028641424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64290097 (or 64290091 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 1028641424 is about 32072.4402563946. The cubic root of 1028641424 is about 1009.4574166381.

The spelling of 1028641424 in words is "one billion, twenty-eight million, six hundred forty-one thousand, four hundred twenty-four".