8421364 has 24 divisors (see below), whose sum is σ = 17097920. Its totient is φ = 3555288.

The previous prime is 8421251. The next prime is 8421403. The reversal of 8421364 is 4631248.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125659 + ... + 125725.

Almost surely, 2^8421364 is an apocalyptic number.

It is an amenable number.

8421364 is an abundant number, since it is smaller than the sum of its proper divisors (8676556).

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

8421364 is an frugal number, since it uses more digits than its factorization.

8421364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 76 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 8421364 is about 2901.9586489128. The cubic root of 8421364 is about 203.4514611157.

8421364 divided by its sum of digits (28) gives a cube (300763 = 67³).

The spelling of 8421364 in words is "eight million, four hundred twenty-one thousand, three hundred sixty-four".