8421248 has 32 divisors (see below), whose sum is σ = 18304920. Its totient is φ = 3827200.

The previous prime is 8421241. The next prime is 8421251.

8421248 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 8421248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1583 + ... + 4398.

Almost surely, 2^8421248 is an apocalyptic number.

8421248 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

8421248 is an abundant number, since it is smaller than the sum of its proper divisors (9883672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8421248 is a wasteful number, since it uses less digits than its factorization.

8421248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006 (or 5994 counting only the distinct ones).

The product of its digits is 4096, while the sum is 29.

The square root of 8421248 is about 2901.9386623428. The cubic root of 8421248 is about 203.4505269646.

The spelling of 8421248 in words is "eight million, four hundred twenty-one thousand, two hundred forty-eight".