1602820 has 12 divisors (see below), whose sum is σ = 3365964. Its totient is φ = 641120.

The previous prime is 1602817. The next prime is 1602823. The reversal of 1602820 is 282061.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1602817) and next prime (1602823).

It can be written as a sum of positive squares in 2 ways, for example, as 586756 + 1016064 = 766^2 + 1008^2 .

It is not an unprimeable number, because it can be changed into a prime (1602823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40051 + ... + 40090.

It is an arithmetic number, because the mean of its divisors is an integer number (280497).

2^1602820 is an apocalyptic number.

1602820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1602820 is an abundant number, since it is smaller than the sum of its proper divisors (1763144).

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

1602820 is a wasteful number, since it uses less digits than its factorization.

1602820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80150 (or 80148 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1602820 is about 1266.0252762090. The cubic root of 1602820 is about 117.0293836151.

Adding to 1602820 its reverse (282061), we get a palindrome (1884881).

The spelling of 1602820 in words is "one million, six hundred two thousand, eight hundred twenty".