1278070404 has 96 divisors (see below), whose sum is σ = 3410418816. Its totient is φ = 369039360.

The previous prime is 1278070403. The next prime is 1278070411. The reversal of 1278070404 is 4040708721.

It is not an unprimeable number, because it can be changed into a prime (1278070403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1556314 + ... + 1557134.

It is an arithmetic number, because the mean of its divisors is an integer number (35525196).

Almost surely, 2^1278070404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1278070404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1705209408).

1278070404 is an abundant number, since it is smaller than the sum of its proper divisors (2132348412).

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

1278070404 is a wasteful number, since it uses less digits than its factorization.

1278070404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1443 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 1278070404 is about 35750.1105452836. The cubic root of 1278070404 is about 1085.2211754364.

The spelling of 1278070404 in words is "one billion, two hundred seventy-eight million, seventy thousand, four hundred four".