1278963252 has 36 divisors (see below), whose sum is σ = 3694783456. Its totient is φ = 365418000.

The previous prime is 1278963241. The next prime is 1278963253. The reversal of 1278963252 is 2523698721.

1278963252 is a `hidden beast` number, since 1 + 2 + 7 + 8 + 9 + 632 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1278963198 and 1278963207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278963253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2537374 + ... + 2537877.

Almost surely, 2^1278963252 is an apocalyptic number.

1278963252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1278963252 is an abundant number, since it is smaller than the sum of its proper divisors (2415820204).

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

1278963252 is a wasteful number, since it uses less digits than its factorization.

1278963252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075268 (or 5075263 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1278963252 is about 35762.5957111617. The cubic root of 1278963252 is about 1085.4738250584.

The spelling of 1278963252 in words is "one billion, two hundred seventy-eight million, nine hundred sixty-three thousand, two hundred fifty-two".