80826421 has 8 divisors (see below), whose sum is σ = 87268664. Its totient is φ = 74416320.

The previous prime is 80826407. The next prime is 80826433. The reversal of 80826421 is 12462808.

It can be written as a sum of positive squares in 4 ways, for example, as 27973521 + 52852900 = 5289^2 + 7270^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80826421 - 2⁹ = 80825909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80826461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2670 + ... + 12991.

It is an arithmetic number, because the mean of its divisors is an integer number (10908583).

Almost surely, 2^80826421 is an apocalyptic number.

It is an amenable number.

80826421 is a deficient number, since it is larger than the sum of its proper divisors (6442243).

80826421 is a wasteful number, since it uses less digits than its factorization.

80826421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 80826421 is about 8990.3515504123. The cubic root of 80826421 is about 432.3655830966.

The spelling of 80826421 in words is "eighty million, eight hundred twenty-six thousand, four hundred twenty-one".