1260388 has 6 divisors (see below), whose sum is σ = 2205686. Its totient is φ = 630192.

The previous prime is 1260383. The next prime is 1260401. The reversal of 1260388 is 8830621.

It can be written as a sum of positive squares in only one way, i.e., 1065024 + 195364 = 1032^2 + 442^2 .

It is not an unprimeable number, because it can be changed into a prime (1260383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157545 + ... + 157552.

2^1260388 is an apocalyptic number.

It is an amenable number.

1260388 is a deficient number, since it is larger than the sum of its proper divisors (945298).

1260388 is a wasteful number, since it uses less digits than its factorization.

1260388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315101 (or 315099 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1260388 is about 1122.6700316656. The cubic root of 1260388 is about 108.0193152468.

The spelling of 1260388 in words is "one million, two hundred sixty thousand, three hundred eighty-eight".