1278148704 has 48 divisors (see below), whose sum is σ = 3834448128. Its totient is φ = 365185152.

The previous prime is 1278148687. The next prime is 1278148759. The reversal of 1278148704 is 4078418721.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 950332 + ... + 951675.

It is an arithmetic number, because the mean of its divisors is an integer number (79884336).

Almost surely, 2^1278148704 is an apocalyptic number.

1278148704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1278148704 is an abundant number, since it is smaller than the sum of its proper divisors (2556299424).

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

1278148704 is a wasteful number, since it uses less digits than its factorization.

1278148704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902027 (or 1902019 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 1278148704 is about 35751.2056300204. The cubic root of 1278148704 is about 1085.2433367306.

The spelling of 1278148704 in words is "one billion, two hundred seventy-eight million, one hundred forty-eight thousand, seven hundred four".