1284869480 has 64 divisors (see below), whose sum is σ = 2991174480. Its totient is φ = 496384000.

The previous prime is 1284869473. The next prime is 1284869489. The reversal of 1284869480 is 849684821.

It can be written as a sum of positive squares in 8 ways, for example, as 789272836 + 495596644 = 28094^2 + 22262^2 .

It is not an unprimeable number, because it can be changed into a prime (1284869489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161762 + ... + 169518.

Almost surely, 2^1284869480 is an apocalyptic number.

1284869480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1284869480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495587240).

1284869480 is an abundant number, since it is smaller than the sum of its proper divisors (1706305000).

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

1284869480 is a wasteful number, since it uses less digits than its factorization.

1284869480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7910 (or 7906 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 1284869480 is about 35845.0760914243. The cubic root of 1284869480 is about 1087.1421587441.

It can be divided in two parts, 12848 and 69480, that added together give a palindrome (82328).

The spelling of 1284869480 in words is "one billion, two hundred eighty-four million, eight hundred sixty-nine thousand, four hundred eighty".