1820616 has 32 divisors (see below), whose sum is σ = 5202240. Its totient is φ = 520128.

The previous prime is 1820597. The next prime is 1820617. The reversal of 1820616 is 6160281.

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

It is not an unprimeable number, because it can be changed into a prime (1820617) 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, 5251 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (162570).

2^1820616 is an apocalyptic number.

It is an amenable number.

1820616 is an abundant number, since it is smaller than the sum of its proper divisors (3381624).

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

1820616 is a wasteful number, since it uses less digits than its factorization.

1820616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10853 (or 10849 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1820616 is about 1349.3020417979. The cubic root of 1820616 is about 122.1066880062.

Adding to 1820616 its reverse (6160281), we get a palindrome (7980897).

The spelling of 1820616 in words is "one million, eight hundred twenty thousand, six hundred sixteen".