78207441 has 8 divisors (see below), whose sum is σ = 112297920. Its totient is φ = 48127632.

The previous prime is 78207421. The next prime is 78207443. The reversal of 78207441 is 14470287.

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

It is a de Polignac number, because none of the positive numbers 2^k-78207441 is a prime.

It is a super-2 number, since 2×78207441² = 12232807655536962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78207443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002621 + ... + 1002698.

It is an arithmetic number, because the mean of its divisors is an integer number (14037240).

Almost surely, 2^78207441 is an apocalyptic number.

It is an amenable number.

78207441 is a deficient number, since it is larger than the sum of its proper divisors (34090479).

78207441 is a wasteful number, since it uses less digits than its factorization.

78207441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005335.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 78207441 is about 8843.4971023911. The cubic root of 78207441 is about 427.6443040765.

The spelling of 78207441 in words is "seventy-eight million, two hundred seven thousand, four hundred forty-one".