1151880 has 64 divisors (see below), whose sum is σ = 3585600. Its totient is φ = 295680.

The previous prime is 1151879. The next prime is 1151881. The reversal of 1151880 is 881511.

It is an interprime number because it is at equal distance from previous prime (1151879) and next prime (1151881).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1151880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151881) 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, 3315 + ... + 3645.

It is an arithmetic number, because the mean of its divisors is an integer number (56025).

2^1151880 is an apocalyptic number.

1151880 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 1151880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792800).

1151880 is an abundant number, since it is smaller than the sum of its proper divisors (2433720).

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

1151880 is a wasteful number, since it uses less digits than its factorization.

1151880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 1151880 is about 1073.2567260446. The cubic root of 1151880 is about 104.8260157234.

The spelling of 1151880 in words is "one million, one hundred fifty-one thousand, eight hundred eighty".