1623123628 has 36 divisors (see below), whose sum is σ = 3317480712. Its totient is φ = 692832000.

The previous prime is 1623123611. The next prime is 1623123629. The reversal of 1623123628 is 8263213261.

It is a junction number, because it is equal to n+sod(n) for n = 1623123593 and 1623123602.

It is not an unprimeable number, because it can be changed into a prime (1623123629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32700 + ... + 65692.

It is an arithmetic number, because the mean of its divisors is an integer number (92152242).

Almost surely, 2^1623123628 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 1623123628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658740356).

1623123628 is an abundant number, since it is smaller than the sum of its proper divisors (1694357084).

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

1623123628 is a wasteful number, since it uses less digits than its factorization.

1623123628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33262 (or 33253 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 1623123628 is about 40288.0084888792. The cubic root of 1623123628 is about 1175.2146589560.

Adding to 1623123628 its reverse (8263213261), we get a palindrome (9886336889).

The spelling of 1623123628 in words is "one billion, six hundred twenty-three million, one hundred twenty-three thousand, six hundred twenty-eight".