1340605072 has 10 divisors (see below), whose sum is σ = 2597422358. Its totient is φ = 670302528.

The previous prime is 1340605039. The next prime is 1340605093. The reversal of 1340605072 is 2705060431.

It can be written as a sum of positive squares in only one way, i.e., 1300612096 + 39992976 = 36064^2 + 6324^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1340605072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41893893 + ... + 41893924.

Almost surely, 2^1340605072 is an apocalyptic number.

It is an amenable number.

1340605072 is a deficient number, since it is larger than the sum of its proper divisors (1256817286).

1340605072 is an equidigital number, since it uses as much as digits as its factorization.

1340605072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83787825 (or 83787819 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1340605072 is about 36614.2741563997. The cubic root of 1340605072 is about 1102.6396857855.

The spelling of 1340605072 in words is "one billion, three hundred forty million, six hundred five thousand, seventy-two".