1623420430 has 16 divisors (see below), whose sum is σ = 2929451184. Its totient is φ = 647747200.

The previous prime is 1623420419. The next prime is 1623420433. The reversal of 1623420430 is 340243261.

It is a junction number, because it is equal to n+sod(n) for n = 1623420395 and 1623420404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623420433) 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, 198412 + ... + 206431.

It is an arithmetic number, because the mean of its divisors is an integer number (183090699).

Almost surely, 2^1623420430 is an apocalyptic number.

1623420430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1623420430 is a deficient number, since it is larger than the sum of its proper divisors (1306030754).

1623420430 is a wasteful number, since it uses less digits than its factorization.

1623420430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405251.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1623420430 is about 40291.6918235013. The cubic root of 1623420430 is about 1175.2862872651.

Adding to 1623420430 its reverse (340243261), we get a palindrome (1963663691).

The spelling of 1623420430 in words is "one billion, six hundred twenty-three million, four hundred twenty thousand, four hundred thirty".