1277208 has 64 divisors (see below), whose sum is σ = 3640800. Its totient is φ = 419904.

The previous prime is 1277207. The next prime is 1277209. The reversal of 1277208 is 8027721.

It is an interprime number because it is at equal distance from previous prime (1277207) and next prime (1277209).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1277207) 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 in 15 ways as a sum of consecutive naturals, for example, 17460 + ... + 17532.

2^1277208 is an apocalyptic number.

1277208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1277208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1820400).

1277208 is an abundant number, since it is smaller than the sum of its proper divisors (2363592).

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

1277208 is an frugal number, since it uses more digits than its factorization.

1277208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1277208 is about 1130.1362749686. The cubic root of 1277208 is about 108.4977028827.

It can be divided in two parts, 1277 and 208, that added together give a triangular number (1485 = T₅₄).

The spelling of 1277208 in words is "one million, two hundred seventy-seven thousand, two hundred eight".