1305255028 has 24 divisors (see below), whose sum is σ = 2847829824. Its totient is φ = 508540800.

The previous prime is 1305255013. The next prime is 1305255041. The reversal of 1305255028 is 8205525031.

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, 2118613 + ... + 2119228.

It is an arithmetic number, because the mean of its divisors is an integer number (118659576).

Almost surely, 2^1305255028 is an apocalyptic number.

It is an amenable number.

1305255028 is an abundant number, since it is smaller than the sum of its proper divisors (1542574796).

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

1305255028 is a wasteful number, since it uses less digits than its factorization.

1305255028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237863 (or 4237861 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 1305255028 is about 36128.3133843804. The cubic root of 1305255028 is about 1092.8614957476.

The spelling of 1305255028 in words is "one billion, three hundred five million, two hundred fifty-five thousand, twenty-eight".