1338352240 has 20 divisors (see below), whose sum is σ = 3111669144. Its totient is φ = 535340864.

The previous prime is 1338352231. The next prime is 1338352247. The reversal of 1338352240 is 422538331.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338352247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8364622 + ... + 8364781.

Almost surely, 2^1338352240 is an apocalyptic number.

1338352240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338352240 is an abundant number, since it is smaller than the sum of its proper divisors (1773316904).

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

1338352240 is a wasteful number, since it uses less digits than its factorization.

1338352240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16729416 (or 16729410 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1338352240 is about 36583.4968257546. The cubic root of 1338352240 is about 1102.0216925187.

The spelling of 1338352240 in words is "one billion, three hundred thirty-eight million, three hundred fifty-two thousand, two hundred forty".