1620212 has 24 divisors (see below), whose sum is σ = 3229632. Its totient is φ = 704000.

The previous prime is 1620209. The next prime is 1620217. The reversal of 1620212 is 2120261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (134568).

2^1620212 is an apocalyptic number.

It is an amenable number.

1620212 is a deficient number, since it is larger than the sum of its proper divisors (1609420).

1620212 is a wasteful number, since it uses less digits than its factorization.

1620212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639 (or 1637 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1620212 is about 1272.8754848767. The cubic root of 1620212 is about 117.4511521717.

Adding to 1620212 its reverse (2120261), we get a palindrome (3740473).

The spelling of 1620212 in words is "one million, six hundred twenty thousand, two hundred twelve".