1620112 has 20 divisors (see below), whose sum is σ = 3380860. Its totient is φ = 747648.

The previous prime is 1620107. The next prime is 1620121. The reversal of 1620112 is 2110261.

It can be written as a sum of positive squares in 2 ways, for example, as 571536 + 1048576 = 756^2 + 1024^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a zygodrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1620092 and 1620101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3687 + ... + 4102.

It is an arithmetic number, because the mean of its divisors is an integer number (169043).

2^1620112 is an apocalyptic number.

It is an amenable number.

1620112 is an abundant number, since it is smaller than the sum of its proper divisors (1760748).

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

1620112 is a wasteful number, since it uses less digits than its factorization.

1620112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7810 (or 7804 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1620112 is about 1272.8362031306. The cubic root of 1620112 is about 117.4487357479.

Adding to 1620112 its reverse (2110261), we get a palindrome (3730373).

The spelling of 1620112 in words is "one million, six hundred twenty thousand, one hundred twelve".