77229148 has 12 divisors (see below), whose sum is σ = 142264360. Its totient is φ = 36582192.

The previous prime is 77229121. The next prime is 77229151. The reversal of 77229148 is 84192277.

It is a self number, because there is not a number n which added to its sum of digits gives 77229148.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508011 + ... + 508162.

Almost surely, 2^77229148 is an apocalyptic number.

It is an amenable number.

77229148 is a deficient number, since it is larger than the sum of its proper divisors (65035212).

77229148 is a wasteful number, since it uses less digits than its factorization.

77229148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016196 (or 1016194 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 77229148 is about 8788.0116067288. The cubic root of 77229148 is about 425.8536898275.

It can be divided in two parts, 77229 and 148, that added together give a palindrome (77377).

The spelling of 77229148 in words is "seventy-seven million, two hundred twenty-nine thousand, one hundred forty-eight".