1284984730 has 16 divisors (see below), whose sum is σ = 2331187200. Its totient is φ = 509946192.

The previous prime is 1284984709. The next prime is 1284984733. The reversal of 1284984730 is 374894821.

It is not an unprimeable number, because it can be changed into a prime (1284984733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504630 + ... + 507169.

It is an arithmetic number, because the mean of its divisors is an integer number (145699200).

Almost surely, 2^1284984730 is an apocalyptic number.

1284984730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1284984730 is a deficient number, since it is larger than the sum of its proper divisors (1046202470).

1284984730 is a wasteful number, since it uses less digits than its factorization.

1284984730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011933.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1284984730 is about 35846.6836680885. The cubic root of 1284984730 is about 1087.1746625353.

It can be divided in two parts, 12849 and 84730, that added together give a palindrome (97579).

The spelling of 1284984730 in words is "one billion, two hundred eighty-four million, nine hundred eighty-four thousand, seven hundred thirty".