78347541 has 8 divisors (see below), whose sum is σ = 104920480. Its totient is φ = 52003152.

The previous prime is 78347513. The next prime is 78347551. The reversal of 78347541 is 14574387.

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

It is not a de Polignac number, because 78347541 - 2¹⁴ = 78331157 is a prime.

It is a super-2 number, since 2×78347541² = 12276674361493362, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78347541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78347551) 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, 56335 + ... + 57708.

It is an arithmetic number, because the mean of its divisors is an integer number (13115060).

Almost surely, 2^78347541 is an apocalyptic number.

It is an amenable number.

78347541 is a deficient number, since it is larger than the sum of its proper divisors (26572939).

78347541 is a wasteful number, since it uses less digits than its factorization.

78347541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114275.

The product of its digits is 94080, while the sum is 39.

The square root of 78347541 is about 8851.4146327014. The cubic root of 78347541 is about 427.8995109382.

The spelling of 78347541 in words is "seventy-eight million, three hundred forty-seven thousand, five hundred forty-one".