1326604040 has 16 divisors (see below), whose sum is σ = 2984859180. Its totient is φ = 530641600.

The previous prime is 1326604039. The next prime is 1326604057. The reversal of 1326604040 is 404066231.

It can be written as a sum of positive squares in 2 ways, for example, as 1278634564 + 47969476 = 35758^2 + 6926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16582511 + ... + 16582590.

Almost surely, 2^1326604040 is an apocalyptic number.

1326604040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326604040 is an abundant number, since it is smaller than the sum of its proper divisors (1658255140).

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

1326604040 is a wasteful number, since it uses less digits than its factorization.

1326604040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33165112 (or 33165108 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1326604040 is about 36422.5759660132. The cubic root of 1326604040 is about 1098.7876560648.

The spelling of 1326604040 in words is "one billion, three hundred twenty-six million, six hundred four thousand, forty".