1284961152 has 32 divisors (see below), whose sum is σ = 3413179080. Its totient is φ = 428320256.

The previous prime is 1284961103. The next prime is 1284961187. The reversal of 1284961152 is 2511694821.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1284961152² = 3302250324298334208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1284961152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672743 + ... + 1673510.

Almost surely, 2^1284961152 is an apocalyptic number.

1284961152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1284961152 is an abundant number, since it is smaller than the sum of its proper divisors (2128217928).

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

1284961152 is an equidigital number, since it uses as much as digits as its factorization.

1284961152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346270 (or 3346258 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 1284961152 is about 35846.3547937583. The cubic root of 1284961152 is about 1087.1680130241.

The spelling of 1284961152 in words is "one billion, two hundred eighty-four million, nine hundred sixty-one thousand, one hundred fifty-two".