1623228 has 48 divisors (see below), whose sum is σ = 4102560. Its totient is φ = 497664.

The previous prime is 1623203. The next prime is 1623229. The reversal of 1623228 is 8223261.

It is a d-powerful number, because it can be written as 1 + 6³ + 2⁴ + 3¹³ + 2¹³ + 2¹⁴ + 8⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 1623198 and 1623207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14838 + ... + 14946.

It is an arithmetic number, because the mean of its divisors is an integer number (85470).

2^1623228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1623228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051280).

1623228 is an abundant number, since it is smaller than the sum of its proper divisors (2479332).

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

1623228 is a wasteful number, since it uses less digits than its factorization.

1623228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 204 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1623228 is about 1274.0596532345. The cubic root of 1623228 is about 117.5239848427.

Adding to 1623228 its reverse (8223261), we get a palindrome (9846489).

The spelling of 1623228 in words is "one million, six hundred twenty-three thousand, two hundred twenty-eight".