1029785028 has 48 divisors (see below), whose sum is σ = 2591010240. Its totient is φ = 317260800.

The previous prime is 1029785011. The next prime is 1029785033. The reversal of 1029785028 is 8205879201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45733 + ... + 64428.

It is an arithmetic number, because the mean of its divisors is an integer number (53979380).

Almost surely, 2^1029785028 is an apocalyptic number.

It is an amenable number.

1029785028 is an abundant number, since it is smaller than the sum of its proper divisors (1561225212).

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

1029785028 is a wasteful number, since it uses less digits than its factorization.

1029785028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110228 (or 110226 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 1029785028 is about 32090.2637570962. The cubic root of 1029785028 is about 1009.8313700760.

The spelling of 1029785028 in words is "one billion, twenty-nine million, seven hundred eighty-five thousand, twenty-eight".