1320240408 has 32 divisors (see below), whose sum is σ = 3304392000. Its totient is φ = 439574688.

The previous prime is 1320240371. The next prime is 1320240409. The reversal of 1320240408 is 8040420231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320240409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9958 + ... + 52341.

It is an arithmetic number, because the mean of its divisors is an integer number (103262250).

Almost surely, 2^1320240408 is an apocalyptic number.

It is an amenable number.

1320240408 is an abundant number, since it is smaller than the sum of its proper divisors (1984151592).

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

1320240408 is a wasteful number, since it uses less digits than its factorization.

1320240408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63191 (or 63187 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1320240408 is about 36335.1126047519. The cubic root of 1320240408 is about 1097.0279019679.

Adding to 1320240408 its reverse (8040420231), we get a palindrome (9360660639).

The spelling of 1320240408 in words is "one billion, three hundred twenty million, two hundred forty thousand, four hundred eight".