1344452840 has 16 divisors (see below), whose sum is σ = 3025018980. Its totient is φ = 537781120.

The previous prime is 1344452827. The next prime is 1344452843. The reversal of 1344452840 is 482544431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1279779076 + 64673764 = 35774^2 + 8042^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1344452840.

It is not an unprimeable number, because it can be changed into a prime (1344452843) 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, 16805621 + ... + 16805700.

Almost surely, 2^1344452840 is an apocalyptic number.

1344452840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344452840 is an abundant number, since it is smaller than the sum of its proper divisors (1680566140).

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

1344452840 is a wasteful number, since it uses less digits than its factorization.

1344452840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33611332 (or 33611328 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The square root of 1344452840 is about 36666.7811513364. The cubic root of 1344452840 is about 1103.6936002086.

The spelling of 1344452840 in words is "one billion, three hundred forty-four million, four hundred fifty-two thousand, eight hundred forty".