1276624 has 20 divisors (see below), whose sum is σ = 2509636. Its totient is φ = 628992.

The previous prime is 1276621. The next prime is 1276631. The reversal of 1276624 is 4266721.

It can be written as a sum of positive squares in 2 ways, for example, as 1065024 + 211600 = 1032^2 + 460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1276592 and 1276601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276621) 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 3 ways as a sum of consecutive naturals, for example, 622 + ... + 1714.

2^1276624 is an apocalyptic number.

It is an amenable number.

1276624 is a deficient number, since it is larger than the sum of its proper divisors (1233012).

1276624 is a wasteful number, since it uses less digits than its factorization.

1276624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1168 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 1276624 is about 1129.8778695063. The cubic root of 1276624 is about 108.4811635985.

It can be divided in two parts, 12 and 76624, that added together give a triangular number (76636 = T₃₉₁).

The spelling of 1276624 in words is "one million, two hundred seventy-six thousand, six hundred twenty-four".