1276240 has 80 divisors (see below), whose sum is σ = 3535488. Its totient is φ = 419328.

The previous prime is 1276237. The next prime is 1276243. The reversal of 1276240 is 426721.

1276240 = 54² + 55² + ... + 158².

It is an interprime number because it is at equal distance from previous prime (1276237) and next prime (1276243).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24054 + ... + 24106.

2^1276240 is an apocalyptic number.

1276240 is a gapful number since it is divisible by the number (10) 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 1276240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767744).

1276240 is an abundant number, since it is smaller than the sum of its proper divisors (2259248).

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

1276240 is a wasteful number, since it uses less digits than its factorization.

1276240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1276240 is about 1129.7079268554. The cubic root of 1276240 is about 108.4702857038.

The spelling of 1276240 in words is "one million, two hundred seventy-six thousand, two hundred forty".