1285828674 has 64 divisors (see below), whose sum is σ = 2806876800. Its totient is φ = 390339072.

The previous prime is 1285828631. The next prime is 1285828681. The reversal of 1285828674 is 4768285821.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2525932 + ... + 2526440.

It is an arithmetic number, because the mean of its divisors is an integer number (43857450).

Almost surely, 2^1285828674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1285828674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403438400).

1285828674 is an abundant number, since it is smaller than the sum of its proper divisors (1521048126).

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

1285828674 is a wasteful number, since it uses less digits than its factorization.

1285828674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899.

The product of its digits is 1720320, while the sum is 51.

The square root of 1285828674 is about 35858.4533129916. The cubic root of 1285828674 is about 1087.4126196406.

The spelling of 1285828674 in words is "one billion, two hundred eighty-five million, eight hundred twenty-eight thousand, six hundred seventy-four".