1152220 has 24 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 451776.

The previous prime is 1152187. The next prime is 1152227. The reversal of 1152220 is 222511.

It is a super-2 number, since 2×1152220² = 2655221856800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1152220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152227) 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, 517 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (102816).

2^1152220 is an apocalyptic number.

1152220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152220 is an abundant number, since it is smaller than the sum of its proper divisors (1315364).

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

1152220 is a wasteful number, since it uses less digits than its factorization.

1152220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1147 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1152220 is about 1073.4151107563. The cubic root of 1152220 is about 104.8363285277.

Adding to 1152220 its reverse (222511), we get a palindrome (1374731).

The spelling of 1152220 in words is "one million, one hundred fifty-two thousand, two hundred twenty".