128236630 has 16 divisors (see below), whose sum is σ = 230970384. Its totient is φ = 51262560.

The previous prime is 128236609. The next prime is 128236631. The reversal of 128236630 is 36632821.

It is a junction number, because it is equal to n+sod(n) for n = 128236592 and 128236601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128236631) 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, 19120 + ... + 24940.

It is an arithmetic number, because the mean of its divisors is an integer number (14435649).

Almost surely, 2^128236630 is an apocalyptic number.

128236630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128236630 is a deficient number, since it is larger than the sum of its proper divisors (102733754).

128236630 is a wasteful number, since it uses less digits than its factorization.

128236630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 128236630 is about 11324.1613376002. The cubic root of 128236630 is about 504.2787861960.

The spelling of 128236630 in words is "one hundred twenty-eight million, two hundred thirty-six thousand, six hundred thirty".