11652820 has 24 divisors (see below), whose sum is σ = 25911144. Its totient is φ = 4386816.

The previous prime is 11652793. The next prime is 11652827. The reversal of 11652820 is 2825611.

It can be written as a sum of positive squares in 4 ways, for example, as 4955076 + 6697744 = 2226^2 + 2588^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11652827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16797 + ... + 17476.

It is an arithmetic number, because the mean of its divisors is an integer number (1079631).

Almost surely, 2^11652820 is an apocalyptic number.

11652820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11652820 is an abundant number, since it is smaller than the sum of its proper divisors (14258324).

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

11652820 is a wasteful number, since it uses less digits than its factorization.

11652820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34299 (or 34297 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 11652820 is about 3413.6227090878. The cubic root of 11652820 is about 226.7133073956.

The spelling of 11652820 in words is "eleven million, six hundred fifty-two thousand, eight hundred twenty".