1152020 has 12 divisors (see below), whose sum is σ = 2419284.
Its totient is φ = 460800.
The previous prime is 1151999. The next prime is 1152023. The reversal of 1152020 is 202511.
Adding to 1152020 its reverse (202511), we get a palindrome (1354531).
It can be divided in two parts, 11520 and 20, that multiplied together give a square (230400 = 4802).
It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 234256 = 958^2 + 484^2
It is a junction number, because it is equal to n+sod(n) for n = 1151992 and 1152010.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1152023) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28781 + ... + 28820.
It is an arithmetic number, because the mean of its divisors is an integer number (201607).
21152020 is an apocalyptic number.
1152020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1152020 is an abundant number, since it is smaller than the sum of its proper divisors (1267264).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1152020 is a wasteful number, since it uses less digits than its factorization.
1152020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 57610 (or 57608 counting only the distinct ones).
The product of its (nonzero) digits is 20, while the sum is 11.
The square root of 1152020 is about 1073.3219461094.
The cubic root of 1152020 is about 104.8302624179.
The spelling of 1152020 in words is "one million, one hundred fifty-two thousand, twenty".