1622408 has 16 divisors (see below), whose sum is σ = 3066000. Its totient is φ = 804816.

The previous prime is 1622407. The next prime is 1622419. The reversal of 1622408 is 8042261.

It is not an unprimeable number, because it can be changed into a prime (1622407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383 + ... + 1841.

It is an arithmetic number, because the mean of its divisors is an integer number (191625).

2^1622408 is an apocalyptic number.

It is an amenable number.

1622408 is a deficient number, since it is larger than the sum of its proper divisors (1443592).

1622408 is a wasteful number, since it uses less digits than its factorization.

1622408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1600 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1622408 is about 1273.7378066148. The cubic root of 1622408 is about 117.5041917925.

Adding to 1622408 its reverse (8042261), we get a palindrome (9664669).

The spelling of 1622408 in words is "one million, six hundred twenty-two thousand, four hundred eight".