1028252644 has 12 divisors (see below), whose sum is σ = 1848075964. Its totient is φ = 500230944.

The previous prime is 1028252627. The next prime is 1028252657. The reversal of 1028252644 is 4462528201.

It can be written as a sum of positive squares in 2 ways, for example, as 689692644 + 338560000 = 26262^2 + 18400^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3473679 + ... + 3473974.

Almost surely, 2^1028252644 is an apocalyptic number.

It is an amenable number.

1028252644 is a deficient number, since it is larger than the sum of its proper divisors (819823320).

1028252644 is a wasteful number, since it uses less digits than its factorization.

1028252644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6947694 (or 6947692 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 1028252644 is about 32066.3787166559. The cubic root of 1028252644 is about 1009.3302241752.

It can be divided in two parts, 10282 and 52644, that added together give a palindrome (62926).

The spelling of 1028252644 in words is "one billion, twenty-eight million, two hundred fifty-two thousand, six hundred forty-four".