1284989352 has 32 divisors (see below), whose sum is σ = 3253142400. Its totient is φ = 422907264.

The previous prime is 1284989347. The next prime is 1284989389. The reversal of 1284989352 is 2539894821.

It is a junction number, because it is equal to n+sod(n) for n = 1284989295 and 1284989304.

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, 336973 + ... + 340764.

It is an arithmetic number, because the mean of its divisors is an integer number (101660700).

Almost surely, 2^1284989352 is an apocalyptic number.

1284989352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1284989352 is an abundant number, since it is smaller than the sum of its proper divisors (1968153048).

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

1284989352 is a wasteful number, since it uses less digits than its factorization.

1284989352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677825 (or 677821 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 1284989352 is about 35846.7481370347. The cubic root of 1284989352 is about 1087.1759660307.

It can be divided in two parts, 12849 and 89352, that added together give a palindrome (102201).

The spelling of 1284989352 in words is "one billion, two hundred eighty-four million, nine hundred eighty-nine thousand, three hundred fifty-two".