1157266 has 16 divisors (see below), whose sum is σ = 1941408. Its totient is φ = 512800.

The previous prime is 1157263. The next prime is 1157279. The reversal of 1157266 is 6627511.

It is not an unprimeable number, because it can be changed into a prime (1157263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261 + ... + 1543.

It is an arithmetic number, because the mean of its divisors is an integer number (121338).

2^1157266 is an apocalyptic number.

1157266 is a deficient number, since it is larger than the sum of its proper divisors (784142).

1157266 is a wasteful number, since it uses less digits than its factorization.

1157266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337.

The product of its digits is 2520, while the sum is 28.

The square root of 1157266 is about 1075.7629850483. The cubic root of 1157266 is about 104.9891447584.

It can be divided in two parts, 115 and 7266, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 1157266 in words is "one million, one hundred fifty-seven thousand, two hundred sixty-six".