8421726 has 16 divisors (see below), whose sum is σ = 17576064. Its totient is φ = 2685144.

The previous prime is 8421713. The next prime is 8421727. The reversal of 8421726 is 6271248.

It is a d-powerful number, because it can be written as 8 + 4⁴ + 2¹⁵ + 1 + 7² + 2²³ + 6² .

It is a junction number, because it is equal to n+sod(n) for n = 8421693 and 8421702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30376 + ... + 30651.

It is an arithmetic number, because the mean of its divisors is an integer number (1098504).

Almost surely, 2^8421726 is an apocalyptic number.

8421726 is an abundant number, since it is smaller than the sum of its proper divisors (9154338).

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

8421726 is a wasteful number, since it uses less digits than its factorization.

8421726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61055.

The product of its digits is 5376, while the sum is 30.

The square root of 8421726 is about 2902.0210199101. The cubic root of 8421726 is about 203.4543762560.

The spelling of 8421726 in words is "eight million, four hundred twenty-one thousand, seven hundred twenty-six".