1021289696 has 48 divisors (see below), whose sum is σ = 2346817536. Its totient is φ = 428378496.

The previous prime is 1021289681. The next prime is 1021289707. The reversal of 1021289696 is 6969821201.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 37976 + ... + 59031.

It is an arithmetic number, because the mean of its divisors is an integer number (48892032).

Almost surely, 2^1021289696 is an apocalyptic number.

1021289696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1021289696 is an abundant number, since it is smaller than the sum of its proper divisors (1325527840).

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

1021289696 is an equidigital number, since it uses as much as digits as its factorization.

1021289696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97071 (or 97063 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1021289696 is about 31957.6234410508. The cubic root of 1021289696 is about 1007.0467914225.

The spelling of 1021289696 in words is "one billion, twenty-one million, two hundred eighty-nine thousand, six hundred ninety-six".