78307082 has 8 divisors (see below), whose sum is σ = 134240736. Its totient is φ = 33560172.

The previous prime is 78307081. The next prime is 78307109. The reversal of 78307082 is 28070387.

It is a happy number.

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

It is a super-2 number, since 2×78307082² = 12263998182709448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78307081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2796668 + ... + 2796695.

It is an arithmetic number, because the mean of its divisors is an integer number (16780092).

Almost surely, 2^78307082 is an apocalyptic number.

78307082 is a deficient number, since it is larger than the sum of its proper divisors (55933654).

78307082 is a wasteful number, since it uses less digits than its factorization.

78307082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5593372.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 78307082 is about 8849.1288836812. The cubic root of 78307082 is about 427.8258418861.

The spelling of 78307082 in words is "seventy-eight million, three hundred seven thousand, eighty-two".