1151320 has 32 divisors (see below), whose sum is σ = 2624400. Its totient is φ = 454528.

The previous prime is 1151317. The next prime is 1151327. The reversal of 1151320 is 231511.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1151320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151327) 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, 4146 + ... + 4414.

2^1151320 is an apocalyptic number.

1151320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151320 is an abundant number, since it is smaller than the sum of its proper divisors (1473080).

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

1151320 is a wasteful number, since it uses less digits than its factorization.

1151320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1151320 is about 1072.9958061428. The cubic root of 1151320 is about 104.8090255032.

Adding to 1151320 its reverse (231511), we get a palindrome (1382831).

It can be divided in two parts, 1 and 151320, that added together give a square (151321 = 389²).

The spelling of 1151320 in words is "one million, one hundred fifty-one thousand, three hundred twenty".