78320481 has 8 divisors (see below), whose sum is σ = 104469504. Its totient is φ = 52192560.

The previous prime is 78320461. The next prime is 78320563. The reversal of 78320481 is 18402387.

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

It is not a de Polignac number, because 78320481 - 2⁵ = 78320449 is a prime.

It is a super-2 number, since 2×78320481² = 12268195488142722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78320441) 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, 8611 + ... + 15191.

It is an arithmetic number, because the mean of its divisors is an integer number (13058688).

Almost surely, 2^78320481 is an apocalyptic number.

It is an amenable number.

78320481 is a deficient number, since it is larger than the sum of its proper divisors (26149023).

78320481 is a wasteful number, since it uses less digits than its factorization.

78320481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 78320481 is about 8849.8859314683. The cubic root of 78320481 is about 427.8502420272.

The spelling of 78320481 in words is "seventy-eight million, three hundred twenty thousand, four hundred eighty-one".