1276053620 has 96 divisors (see below), whose sum is σ = 2835495936. Its totient is φ = 481766400.

The previous prime is 1276053617. The next prime is 1276053671. The reversal of 1276053620 is 263506721.

It is a super-2 number, since 2×1276053620² = 3256625682230208800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7049930 + ... + 7050110.

It is an arithmetic number, because the mean of its divisors is an integer number (29536416).

Almost surely, 2^1276053620 is an apocalyptic number.

1276053620 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 1276053620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1417747968).

1276053620 is an abundant number, since it is smaller than the sum of its proper divisors (1559442316).

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

1276053620 is a wasteful number, since it uses less digits than its factorization.

1276053620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1276053620 is about 35721.8927270099. The cubic root of 1276053620 is about 1084.6500517242.

The spelling of 1276053620 in words is "one billion, two hundred seventy-six million, fifty-three thousand, six hundred twenty".