78320162 has 4 divisors (see below), whose sum is σ = 117480246. Its totient is φ = 39160080.

The previous prime is 78320159. The next prime is 78320191. The reversal of 78320162 is 26102387.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 48846121 + 29474041 = 6989^2 + 5429^2 .

It is a super-2 number, since 2×78320162² = 12268095551412488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19580039 + ... + 19580042.

Almost surely, 2^78320162 is an apocalyptic number.

78320162 is a deficient number, since it is larger than the sum of its proper divisors (39160084).

78320162 is a wasteful number, since it uses less digits than its factorization.

78320162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39160083.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 78320162 is about 8849.8679086187. The cubic root of 78320162 is about 427.8496611471.

The spelling of 78320162 in words is "seventy-eight million, three hundred twenty thousand, one hundred sixty-two".