78238141 has 8 divisors (see below), whose sum is σ = 80960000. Its totient is φ = 75528720.

The previous prime is 78238109. The next prime is 78238159. The reversal of 78238141 is 14183287.

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 78238141 - 2⁵ = 78238109 is a prime.

It is a super-2 number, since 2×78238141² = 12242413414271762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78238097 and 78238106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78238241) 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, 10735 + ... + 16483.

It is an arithmetic number, because the mean of its divisors is an integer number (10120000).

Almost surely, 2^78238141 is an apocalyptic number.

It is an amenable number.

78238141 is a deficient number, since it is larger than the sum of its proper divisors (2721859).

78238141 is a wasteful number, since it uses less digits than its factorization.

78238141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6219.

The product of its digits is 10752, while the sum is 34.

The square root of 78238141 is about 8845.2326707668. The cubic root of 78238141 is about 427.7002534102.

The spelling of 78238141 in words is "seventy-eight million, two hundred thirty-eight thousand, one hundred forty-one".