80348021 has 4 divisors (see below), whose sum is σ = 86528652. Its totient is φ = 74167392.

The previous prime is 80348011. The next prime is 80348077. The reversal of 80348021 is 12084308.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22800625 + 57547396 = 4775^2 + 7586^2 .

It is not a de Polignac number, because 80348021 - 2¹⁴ = 80331637 is a prime.

It is a super-3 number, since 3×80348021³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80348011) 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, 3090296 + ... + 3090321.

It is an arithmetic number, because the mean of its divisors is an integer number (21632163).

Almost surely, 2^80348021 is an apocalyptic number.

It is an amenable number.

80348021 is a deficient number, since it is larger than the sum of its proper divisors (6180631).

80348021 is a wasteful number, since it uses less digits than its factorization.

80348021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180630.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 80348021 is about 8963.7057626854. The cubic root of 80348021 is about 431.5108579034.

The spelling of 80348021 in words is "eighty million, three hundred forty-eight thousand, twenty-one".