1278108132 has 24 divisors (see below), whose sum is σ = 3408288576. Its totient is φ = 365173728.

The previous prime is 1278108103. The next prime is 1278108199. The reversal of 1278108132 is 2318018721.

It is a junction number, because it is equal to n+sod(n) for n = 1278108093 and 1278108102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7607703 + ... + 7607870.

It is an arithmetic number, because the mean of its divisors is an integer number (142012024).

Almost surely, 2^1278108132 is an apocalyptic number.

1278108132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1278108132 is an abundant number, since it is smaller than the sum of its proper divisors (2130180444).

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

1278108132 is a wasteful number, since it uses less digits than its factorization.

1278108132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15215587 (or 15215585 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 1278108132 is about 35750.6382040936. The cubic root of 1278108132 is about 1085.2318537270.

The spelling of 1278108132 in words is "one billion, two hundred seventy-eight million, one hundred eight thousand, one hundred thirty-two".