1345604840 has 16 divisors (see below), whose sum is σ = 3027610980. Its totient is φ = 538241920.

The previous prime is 1345604837. The next prime is 1345604873. The reversal of 1345604840 is 484065431.

1345604840 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1212571684 + 133033156 = 34822^2 + 11534^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1345604840.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16820021 + ... + 16820100.

Almost surely, 2^1345604840 is an apocalyptic number.

1345604840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345604840 is an abundant number, since it is smaller than the sum of its proper divisors (1682006140).

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

1345604840 is a wasteful number, since it uses less digits than its factorization.

1345604840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33640132 (or 33640128 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1345604840 is about 36682.4868295485. The cubic root of 1345604840 is about 1104.0087450298.

It can be divided in two parts, 134560 and 4840, that multiplied together give a square (651270400 = 25520²).

The spelling of 1345604840 in words is "one billion, three hundred forty-five million, six hundred four thousand, eight hundred forty".