8401928 has 8 divisors (see below), whose sum is σ = 15753630. Its totient is φ = 4200960.

The previous prime is 8401919. The next prime is 8401949. The reversal of 8401928 is 8291048.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7963684 + 438244 = 2822^2 + 662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 8401894 and 8401903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525113 + ... + 525128.

Almost surely, 2^8401928 is an apocalyptic number.

It is an amenable number.

8401928 is a deficient number, since it is larger than the sum of its proper divisors (7351702).

8401928 is a wasteful number, since it uses less digits than its factorization.

8401928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050247 (or 1050243 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8401928 is about 2898.6079417541. The cubic root of 8401928 is about 203.2948226508.

It can be divided in two parts, 84019 and 28, that multiplied together give a palindrome (2352532).

The spelling of 8401928 in words is "eight million, four hundred one thousand, nine hundred twenty-eight".