1326278604 has 48 divisors (see below), whose sum is σ = 3547502336. Its totient is φ = 377784000.

The previous prime is 1326278593. The next prime is 1326278609. The reversal of 1326278604 is 4068726231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1326278609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3954 + ... + 51654.

Almost surely, 2^1326278604 is an apocalyptic number.

1326278604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1326278604 is an abundant number, since it is smaller than the sum of its proper divisors (2221223732).

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

1326278604 is a wasteful number, since it uses less digits than its factorization.

1326278604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48046 (or 48044 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 1326278604 is about 36418.1081880979. The cubic root of 1326278604 is about 1098.6977989828.

The spelling of 1326278604 in words is "one billion, three hundred twenty-six million, two hundred seventy-eight thousand, six hundred four".