1284765480 has 96 divisors (see below), whose sum is σ = 4421125800. Its totient is φ = 322449408.

The previous prime is 1284765409. The next prime is 1284765491. The reversal of 1284765480 is 845674821.

1284765480 is a `hidden beast` number, since 128 + 47 + 6 + 5 + 480 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1274918436 + 9847044 = 35706^2 + 3138^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98845 + ... + 111084.

Almost surely, 2^1284765480 is an apocalyptic number.

1284765480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1284765480 is an abundant number, since it is smaller than the sum of its proper divisors (3136360320).

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

1284765480 is a wasteful number, since it uses less digits than its factorization.

1284765480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209963 (or 209956 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 1284765480 is about 35843.6253746744. The cubic root of 1284765480 is about 1087.1128261058.

It can be divided in two parts, 128476 and 5480, that added together give a square (133956 = 366²).

The spelling of 1284765480 in words is "one billion, two hundred eighty-four million, seven hundred sixty-five thousand, four hundred eighty".