1340215888 has 40 divisors (see below), whose sum is σ = 2955900096. Its totient is φ = 582700800.

The previous prime is 1340215861. The next prime is 1340215909. The reversal of 1340215888 is 8885120431.

It is a self number, because there is not a number n which added to its sum of digits gives 1340215888.

It is a congruent number.

It is an unprimeable number.

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, 161493 + ... + 169588.

Almost surely, 2^1340215888 is an apocalyptic number.

It is an amenable number.

1340215888 is an abundant number, since it is smaller than the sum of its proper divisors (1615684208).

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

1340215888 is a wasteful number, since it uses less digits than its factorization.

1340215888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331123 (or 331117 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 1340215888 is about 36608.9591220510. The cubic root of 1340215888 is about 1102.5329749514.

The spelling of 1340215888 in words is "one billion, three hundred forty million, two hundred fifteen thousand, eight hundred eighty-eight".