1029798644 has 24 divisors (see below), whose sum is σ = 2064400128. Its totient is φ = 440313120.

The previous prime is 1029798617. The next prime is 1029798673. The reversal of 1029798644 is 4468979201.

It is a junction number, because it is equal to n+sod(n) for n = 1029798592 and 1029798601.

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, 30599 + ... + 54734.

It is an arithmetic number, because the mean of its divisors is an integer number (86016672).

Almost surely, 2^1029798644 is an apocalyptic number.

1029798644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1029798644 is an abundant number, since it is smaller than the sum of its proper divisors (1034601484).

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

1029798644 is a wasteful number, since it uses less digits than its factorization.

1029798644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85775 (or 85773 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1029798644 is about 32090.4759079700. The cubic root of 1029798644 is about 1009.8358207794.

The spelling of 1029798644 in words is "one billion, twenty-nine million, seven hundred ninety-eight thousand, six hundred forty-four".