77244838 has 32 divisors (see below), whose sum is σ = 134548128. Its totient is φ = 32870400.

The previous prime is 77244799. The next prime is 77244851. The reversal of 77244838 is 83844277.

It is a junction number, because it is equal to n+sod(n) for n = 77244794 and 77244803.

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 15 ways as a sum of consecutive naturals, for example, 89706 + ... + 90562.

It is an arithmetic number, because the mean of its divisors is an integer number (4204629).

Almost surely, 2^77244838 is an apocalyptic number.

77244838 is a deficient number, since it is larger than the sum of its proper divisors (57303290).

77244838 is a wasteful number, since it uses less digits than its factorization.

77244838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its digits is 301056, while the sum is 43.

The square root of 77244838 is about 8788.9042547976. The cubic root of 77244838 is about 425.8825269187.

The spelling of 77244838 in words is "seventy-seven million, two hundred forty-four thousand, eight hundred thirty-eight".