1151856 has 60 divisors (see below), whose sum is σ = 3401320. Its totient is φ = 362880.

The previous prime is 1151807. The next prime is 1151861. The reversal of 1151856 is 6581511.

1151856 = 174² + 175² + ... + 205².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2526 + ... + 2946.

2^1151856 is an apocalyptic number.

1151856 is a gapful number since it is divisible by the number (16) 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 1151856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700660).

1151856 is an abundant number, since it is smaller than the sum of its proper divisors (2249464).

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

1151856 is a wasteful number, since it uses less digits than its factorization.

1151856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 445 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 1151856 is about 1073.2455450641. The cubic root of 1151856 is about 104.8252876840.

The spelling of 1151856 in words is "one million, one hundred fifty-one thousand, eight hundred fifty-six".