1284485884 has 24 divisors (see below), whose sum is σ = 2512013616. Its totient is φ = 569616000.

The previous prime is 1284485869. The next prime is 1284485903. The reversal of 1284485884 is 4885844821.

It is a super-2 number, since 2×1284485884² = 3299807972390522912, which contains 22 as substring.

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, 354207 + ... + 357814.

It is an arithmetic number, because the mean of its divisors is an integer number (104667234).

Almost surely, 2^1284485884 is an apocalyptic number.

It is an amenable number.

1284485884 is a deficient number, since it is larger than the sum of its proper divisors (1227527732).

1284485884 is a wasteful number, since it uses less digits than its factorization.

1284485884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712077 (or 712075 counting only the distinct ones).

The product of its digits is 2621440, while the sum is 52.

The square root of 1284485884 is about 35839.7249431410. The cubic root of 1284485884 is about 1087.0339597149.

The spelling of 1284485884 in words is "one billion, two hundred eighty-four million, four hundred eighty-five thousand, eight hundred eighty-four".