1284028964 has 12 divisors (see below), whose sum is σ = 2270216844. Its totient is φ = 635395584.

The previous prime is 1284028957. The next prime is 1284028973. The reversal of 1284028964 is 4698204821.

It can be written as a sum of positive squares in 2 ways, for example, as 263737600 + 1020291364 = 16240^2 + 31942^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 1654289 + ... + 1655064.

It is an arithmetic number, because the mean of its divisors is an integer number (189184737).

Almost surely, 2^1284028964 is an apocalyptic number.

It is an amenable number.

1284028964 is a deficient number, since it is larger than the sum of its proper divisors (986187880).

1284028964 is a wasteful number, since it uses less digits than its factorization.

1284028964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309454 (or 3309452 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1284028964 is about 35833.3498852675. The cubic root of 1284028964 is about 1086.9050504320.

The spelling of 1284028964 in words is "one billion, two hundred eighty-four million, twenty-eight thousand, nine hundred sixty-four".