8421748 has 12 divisors (see below), whose sum is σ = 14815780. Its totient is φ = 4188672.

The previous prime is 8421737. The next prime is 8421757. The reversal of 8421748 is 8471248.

It can be written as a sum of positive squares in 2 ways, for example, as 2010724 + 6411024 = 1418^2 + 2532^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 8 + 4 + 2²³ + 1 + 7³ + 4² + 8⁵ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4683 + ... + 6226.

Almost surely, 2^8421748 is an apocalyptic number.

It is an amenable number.

8421748 is a deficient number, since it is larger than the sum of its proper divisors (6394032).

8421748 is a wasteful number, since it uses less digits than its factorization.

8421748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11106 (or 11104 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 8421748 is about 2902.0248103695. The cubic root of 8421748 is about 203.4545534165.

The spelling of 8421748 in words is "eight million, four hundred twenty-one thousand, seven hundred forty-eight".