1284740232 has 16 divisors (see below), whose sum is σ = 3211850640. Its totient is φ = 428246736.

The previous prime is 1284740231. The next prime is 1284740239. The reversal of 1284740232 is 2320474821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1284740193 and 1284740202.

It is not an unprimeable number, because it can be changed into a prime (1284740231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26765398 + ... + 26765445.

It is an arithmetic number, because the mean of its divisors is an integer number (200740665).

Almost surely, 2^1284740232 is an apocalyptic number.

1284740232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1284740232 is an abundant number, since it is smaller than the sum of its proper divisors (1927110408).

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

1284740232 is a wasteful number, since it uses less digits than its factorization.

1284740232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53530852 (or 53530848 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 1284740232 is about 35843.2731764274. The cubic root of 1284740232 is about 1087.1057048049.

The spelling of 1284740232 in words is "one billion, two hundred eighty-four million, seven hundred forty thousand, two hundred thirty-two".