1277048388 has 72 divisors (see below), whose sum is σ = 3781409184. Its totient is φ = 331699200.

The previous prime is 1277048371. The next prime is 1277048401. The reversal of 1277048388 is 8838407721.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92253 + ... + 105188.

It is an arithmetic number, because the mean of its divisors is an integer number (52519572).

Almost surely, 2^1277048388 is an apocalyptic number.

It is an amenable number.

1277048388 is an abundant number, since it is smaller than the sum of its proper divisors (2504360796).

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

1277048388 is a wasteful number, since it uses less digits than its factorization.

1277048388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197473 (or 197464 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 1277048388 is about 35735.8138007238. The cubic root of 1277048388 is about 1084.9318306113.

The spelling of 1277048388 in words is "one billion, two hundred seventy-seven million, forty-eight thousand, three hundred eighty-eight".