10128621 has 8 divisors (see below), whose sum is σ = 13520160. Its totient is φ = 6744752.

The previous prime is 10128593. The next prime is 10128637. The reversal of 10128621 is 12682101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10128621 - 2⁶ = 10128557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10128421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2890 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (1690020).

Almost surely, 2^10128621 is an apocalyptic number.

It is an amenable number.

10128621 is a deficient number, since it is larger than the sum of its proper divisors (3391539).

10128621 is a wasteful number, since it uses less digits than its factorization.

10128621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 10128621 is about 3182.5494497337. The cubic root of 10128621 is about 216.3632220313.

The spelling of 10128621 in words is "ten million, one hundred twenty-eight thousand, six hundred twenty-one".