10309128 has 16 divisors (see below), whose sum is σ = 25772880. Its totient is φ = 3436368.

The previous prime is 10309099. The next prime is 10309139. The reversal of 10309128 is 82190301.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 429547 = 10309128 / (1 + 0 + 3 + 0 + 9 + 1 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 10309098 and 10309107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214750 + ... + 214797.

It is an arithmetic number, because the mean of its divisors is an integer number (1610805).

Almost surely, 2^10309128 is an apocalyptic number.

It is an amenable number.

10309128 is an abundant number, since it is smaller than the sum of its proper divisors (15463752).

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

10309128 is a wasteful number, since it uses less digits than its factorization.

10309128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429556 (or 429552 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 10309128 is about 3210.7830820533. The cubic root of 10309128 is about 217.6409655608.

Adding to 10309128 its reverse (82190301), we get a palindrome (92499429).

The spelling of 10309128 in words is "ten million, three hundred nine thousand, one hundred twenty-eight".