1622427 has 4 divisors (see below), whose sum is σ = 2163240. Its totient is φ = 1081616.

The previous prime is 1622419. The next prime is 1622431. The reversal of 1622427 is 7242261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1622427 - 2³ = 1622419 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1622397 and 1622406.

It is not an unprimeable number, because it can be changed into a prime (1622407) 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, 270402 + ... + 270407.

It is an arithmetic number, because the mean of its divisors is an integer number (540810).

2^1622427 is an apocalyptic number.

1622427 is a deficient number, since it is larger than the sum of its proper divisors (540813).

1622427 is an equidigital number, since it uses as much as digits as its factorization.

1622427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540812.

The product of its digits is 1344, while the sum is 24.

The square root of 1622427 is about 1273.7452649569. The cubic root of 1622427 is about 117.5046504874.

Adding to 1622427 its reverse (7242261), we get a palindrome (8864688).

The spelling of 1622427 in words is "one million, six hundred twenty-two thousand, four hundred twenty-seven".