1640022 has 16 divisors (see below), whose sum is σ = 3302832. Its totient is φ = 542880.

The previous prime is 1640021. The next prime is 1640033. The reversal of 1640022 is 2200461.

It is a super-3 number, since 3×1640022³ = 13233364547943871944, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1639983 and 1640010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640021) 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, 72 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (206427).

2^1640022 is an apocalyptic number.

1640022 is an abundant number, since it is smaller than the sum of its proper divisors (1662810).

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

1640022 is a wasteful number, since it uses less digits than its factorization.

1640022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1640022 is about 1280.6334370147. The cubic root of 1640022 is about 117.9278981146.

Adding to 1640022 its reverse (2200461), we get a palindrome (3840483).

The spelling of 1640022 in words is "one million, six hundred forty thousand, twenty-two".