1340401552 has 40 divisors (see below), whose sum is σ = 2969897216. Its totient is φ = 574096896.

The previous prime is 1340401549. The next prime is 1340401597. The reversal of 1340401552 is 2551040431.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253528 + ... + 258760.

Almost surely, 2^1340401552 is an apocalyptic number.

It is an amenable number.

1340401552 is an abundant number, since it is smaller than the sum of its proper divisors (1629495664).

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

1340401552 is a wasteful number, since it uses less digits than its factorization.

1340401552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535 (or 7529 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1340401552 is about 36611.4948069592. The cubic root of 1340401552 is about 1102.5838849658.

Adding to 1340401552 its reverse (2551040431), we get a palindrome (3891441983).

The spelling of 1340401552 in words is "one billion, three hundred forty million, four hundred one thousand, five hundred fifty-two".