10191428 has 24 divisors (see below), whose sum is σ = 19729752. Its totient is φ = 4575744.

The previous prime is 10191427. The next prime is 10191431. The reversal of 10191428 is 82419101.

It can be written as a sum of positive squares in 4 ways, for example, as 3211264 + 6980164 = 1792^2 + 2642^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 10191397 and 10191406.

It is not an unprimeable number, because it can be changed into a prime (10191421) 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, 725 + ... + 4572.

It is an arithmetic number, because the mean of its divisors is an integer number (822073).

Almost surely, 2^10191428 is an apocalyptic number.

It is an amenable number.

10191428 is a deficient number, since it is larger than the sum of its proper divisors (9538324).

10191428 is a wasteful number, since it uses less digits than its factorization.

10191428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5351 (or 5349 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 10191428 is about 3192.4016038086. The cubic root of 10191428 is about 216.8095194687.

The spelling of 10191428 in words is "ten million, one hundred ninety-one thousand, four hundred twenty-eight".