78928141 has 8 divisors (see below), whose sum is σ = 81379584. Its totient is φ = 76493520.

The previous prime is 78928133. The next prime is 78928151. The reversal of 78928141 is 14182987.

It is a happy number.

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 78928141 - 2³ = 78928133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78928094 and 78928103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78928151) 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, 5676 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (10172448).

Almost surely, 2^78928141 is an apocalyptic number.

It is an amenable number.

78928141 is a deficient number, since it is larger than the sum of its proper divisors (2451443).

78928141 is a wasteful number, since it uses less digits than its factorization.

78928141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411.

The product of its digits is 32256, while the sum is 40.

The square root of 78928141 is about 8884.1511130777. The cubic root of 78928141 is about 428.9539038682.

The spelling of 78928141 in words is "seventy-eight million, nine hundred twenty-eight thousand, one hundred forty-one".