1284268734 has 36 divisors (see below), whose sum is σ = 3236883624. Its totient is φ = 366933672.

The previous prime is 1284268679. The next prime is 1284268759. The reversal of 1284268734 is 4378624821.

It is a happy number.

It is a super-2 number, since 2×1284268734² = 3298692362259925512, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1284268734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 727162 + ... + 728925.

It is an arithmetic number, because the mean of its divisors is an integer number (89913434).

Almost surely, 2^1284268734 is an apocalyptic number.

1284268734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1284268734 is an abundant number, since it is smaller than the sum of its proper divisors (1952614890).

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

1284268734 is a wasteful number, since it uses less digits than its factorization.

1284268734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456109 (or 1456099 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 1284268734 is about 35836.6953554593. The cubic root of 1284268734 is about 1086.9726997378.

The spelling of 1284268734 in words is "one billion, two hundred eighty-four million, two hundred sixty-eight thousand, seven hundred thirty-four".