78311122 has 16 divisors (see below), whose sum is σ = 124488000. Its totient is φ = 36843120.

The previous prime is 78311089. The next prime is 78311131. The reversal of 78311122 is 22111387.

It is a happy number.

It is a super-2 number, since 2×78311122² = 12265263657797768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1254 + ... + 12577.

It is an arithmetic number, because the mean of its divisors is an integer number (7780500).

Almost surely, 2^78311122 is an apocalyptic number.

78311122 is a deficient number, since it is larger than the sum of its proper divisors (46176878).

78311122 is a wasteful number, since it uses less digits than its factorization.

78311122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14001.

The product of its digits is 672, while the sum is 25.

The square root of 78311122 is about 8849.3571517936. The cubic root of 78311122 is about 427.8331991887.

The spelling of 78311122 in words is "seventy-eight million, three hundred eleven thousand, one hundred twenty-two".