1623426 has 16 divisors (see below), whose sum is σ = 3710784. Its totient is φ = 463824.

The previous prime is 1623421. The next prime is 1623431. The reversal of 1623426 is 6243261.

It is an interprime number because it is at equal distance from previous prime (1623421) and next prime (1623431).

It is a junction number, because it is equal to n+sod(n) for n = 1623396 and 1623405.

It is not an unprimeable number, because it can be changed into a prime (1623421) 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, 19285 + ... + 19368.

It is an arithmetic number, because the mean of its divisors is an integer number (231924).

2^1623426 is an apocalyptic number.

1623426 is an abundant number, since it is smaller than the sum of its proper divisors (2087358).

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

1623426 is a wasteful number, since it uses less digits than its factorization.

1623426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38665.

The product of its digits is 1728, while the sum is 24.

The square root of 1623426 is about 1274.1373552329. The cubic root of 1623426 is about 117.5287631410.

Adding to 1623426 its reverse (6243261), we get a palindrome (7866687).

The spelling of 1623426 in words is "one million, six hundred twenty-three thousand, four hundred twenty-six".