210423630 has 16 divisors (see below), whose sum is σ = 505016784. Its totient is φ = 56112960.

The previous prime is 210423571. The next prime is 210423659. The reversal of 210423630 is 36324012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 210423597 and 210423606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3507031 + ... + 3507090.

It is an arithmetic number, because the mean of its divisors is an integer number (31563549).

Almost surely, 2^210423630 is an apocalyptic number.

210423630 is an abundant number, since it is smaller than the sum of its proper divisors (294593154).

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

210423630 is a wasteful number, since it uses less digits than its factorization.

210423630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7014131.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 210423630 is about 14505.9860057840. The cubic root of 210423630 is about 594.7916131114.

Adding to 210423630 its reverse (36324012), we get a palindrome (246747642).

The spelling of 210423630 in words is "two hundred ten million, four hundred twenty-three thousand, six hundred thirty".