1285038528 has 28 divisors (see below), whose sum is σ = 3399998280. Its totient is φ = 428346112.

The previous prime is 1285038499. The next prime is 1285038577. The reversal of 1285038528 is 8258305821.

It is a self number, because there is not a number n which added to its sum of digits gives 1285038528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3346263 + ... + 3346646.

It is an arithmetic number, because the mean of its divisors is an integer number (121428510).

Almost surely, 2^1285038528 is an apocalyptic number.

It is an amenable number.

1285038528 is an abundant number, since it is smaller than the sum of its proper divisors (2114959752).

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

1285038528 is an equidigital number, since it uses as much as digits as its factorization.

1285038528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692924 (or 6692914 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 1285038528 is about 35847.4340504310. The cubic root of 1285038528 is about 1087.1898344422.

The spelling of 1285038528 in words is "one billion, two hundred eighty-five million, thirty-eight thousand, five hundred twenty-eight".