1157726220 has 48 divisors (see below), whose sum is σ = 3704725248. Its totient is φ = 264623040.

The previous prime is 1157726153. The next prime is 1157726233. The reversal of 1157726220 is 226277511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1377826 + ... + 1378665.

It is an arithmetic number, because the mean of its divisors is an integer number (77181776).

Almost surely, 2^1157726220 is an apocalyptic number.

1157726220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157726220 is an abundant number, since it is smaller than the sum of its proper divisors (2546999028).

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

1157726220 is a wasteful number, since it uses less digits than its factorization.

1157726220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756510 (or 2756508 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1157726220 is about 34025.3761184208. The cubic root of 1157726220 is about 1050.0306022827.

The spelling of 1157726220 in words is "one billion, one hundred fifty-seven million, seven hundred twenty-six thousand, two hundred twenty".