1345627280 has 20 divisors (see below), whose sum is σ = 3128583612. Its totient is φ = 538250880.

The previous prime is 1345627273. The next prime is 1345627301. The reversal of 1345627280 is 827265431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 375429376 + 970197904 = 19376^2 + 31148^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 8410091 + ... + 8410250.

Almost surely, 2^1345627280 is an apocalyptic number.

1345627280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345627280 is an abundant number, since it is smaller than the sum of its proper divisors (1782956332).

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

1345627280 is a wasteful number, since it uses less digits than its factorization.

1345627280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16820354 (or 16820348 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1345627280 is about 36682.7926963038. The cubic root of 1345627280 is about 1104.0148820020.

The spelling of 1345627280 in words is "one billion, three hundred forty-five million, six hundred twenty-seven thousand, two hundred eighty".