77829148 has 12 divisors (see below), whose sum is σ = 142122960. Its totient is φ = 37222592.

The previous prime is 77829137. The next prime is 77829151. The reversal of 77829148 is 84192877.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 77829098 and 77829107.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 422893 + ... + 423076.

It is an arithmetic number, because the mean of its divisors is an integer number (11843580).

Almost surely, 2^77829148 is an apocalyptic number.

It is an amenable number.

77829148 is a deficient number, since it is larger than the sum of its proper divisors (64293812).

77829148 is a wasteful number, since it uses less digits than its factorization.

77829148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845996 (or 845994 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 77829148 is about 8822.0829739920. The cubic root of 77829148 is about 426.9536776036.

It can be divided in two parts, 77829 and 148, that added together give a palindrome (77977).

The spelling of 77829148 in words is "seventy-seven million, eight hundred twenty-nine thousand, one hundred forty-eight".