78162206 has 4 divisors (see below), whose sum is σ = 117243312. Its totient is φ = 39081102.

The previous prime is 78162193. The next prime is 78162233. The reversal of 78162206 is 60226187.

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

It is a super-2 number, since 2×78162206² = 12218660893572872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19540550 + ... + 19540553.

It is an arithmetic number, because the mean of its divisors is an integer number (29310828).

Almost surely, 2^78162206 is an apocalyptic number.

78162206 is a deficient number, since it is larger than the sum of its proper divisors (39081106).

78162206 is a wasteful number, since it uses less digits than its factorization.

78162206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39081105.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 78162206 is about 8840.9392035009. The cubic root of 78162206 is about 427.5618386885.

The spelling of 78162206 in words is "seventy-eight million, one hundred sixty-two thousand, two hundred six".