10391428 has 6 divisors (see below), whose sum is σ = 18185006. Its totient is φ = 5195712.

The previous prime is 10391419. The next prime is 10391441. The reversal of 10391428 is 82419301.

It is a happy number.

10391428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8773444 + 1617984 = 2962^2 + 1272^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10391396 and 10391405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1298925 + ... + 1298932.

Almost surely, 2^10391428 is an apocalyptic number.

It is an amenable number.

10391428 is a deficient number, since it is larger than the sum of its proper divisors (7793578).

10391428 is a wasteful number, since it uses less digits than its factorization.

10391428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597861 (or 2597859 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 10391428 is about 3223.5737931681. The cubic root of 10391428 is about 218.2185894884.

The spelling of 10391428 in words is "ten million, three hundred ninety-one thousand, four hundred twenty-eight".