77731226 has 16 divisors (see below), whose sum is σ = 118584000. Its totient is φ = 38206560.

The previous prime is 77731219. The next prime is 77731249. The reversal of 77731226 is 62213777.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70310 + ... + 71406.

It is an arithmetic number, because the mean of its divisors is an integer number (7411500).

Almost surely, 2^77731226 is an apocalyptic number.

77731226 is a deficient number, since it is larger than the sum of its proper divisors (40852774).

77731226 is a wasteful number, since it uses less digits than its factorization.

77731226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669.

The product of its digits is 24696, while the sum is 35.

The square root of 77731226 is about 8816.5314041294. The cubic root of 77731226 is about 426.7745428997.

The spelling of 77731226 in words is "seventy-seven million, seven hundred thirty-one thousand, two hundred twenty-six".