1320774408 has 36 divisors (see below), whose sum is σ = 3577932735. Its totient is φ = 440155344.

The previous prime is 1320774391. The next prime is 1320774461. The reversal of 1320774408 is 8044770231.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1320774408 is a `hidden beast` number, since 1 + 3 + 207 + 7 + 440 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 660387204 + 660387204 = 25698^2 + 25698^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25698.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 306235 + ... + 310517.

Almost surely, 2^1320774408 is an apocalyptic number.

1320774408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1320774408 is an abundant number, since it is smaller than the sum of its proper divisors (2257158327).

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

1320774408 is an frugal number, since it uses more digits than its factorization.

1320774408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8578 (or 4288 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 1320774408 is about 36342.4601258638. The cubic root of 1320774408 is about 1097.1757876439.

The spelling of 1320774408 in words is "one billion, three hundred twenty million, seven hundred seventy-four thousand, four hundred eight".