78828341 has 4 divisors (see below), whose sum is σ = 79236972. Its totient is φ = 78419712.

The previous prime is 78828329. The next prime is 78828349. The reversal of 78828341 is 14382887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14382887 = 617 ⋅23311.

It can be written as a sum of positive squares in 2 ways, for example, as 24216241 + 54612100 = 4921^2 + 7390^2 .

It is a cyclic number.

It is not a de Polignac number, because 78828341 - 2²² = 74634037 is a prime.

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 (78828349) 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, 204026 + ... + 204411.

It is an arithmetic number, because the mean of its divisors is an integer number (19809243).

Almost surely, 2^78828341 is an apocalyptic number.

It is an amenable number.

78828341 is a deficient number, since it is larger than the sum of its proper divisors (408631).

78828341 is a wasteful number, since it uses less digits than its factorization.

78828341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408630.

The product of its digits is 86016, while the sum is 41.

The square root of 78828341 is about 8878.5325927205. The cubic root of 78828341 is about 428.7730319377.

The spelling of 78828341 in words is "seventy-eight million, eight hundred twenty-eight thousand, three hundred forty-one".