77049738 has 16 divisors (see below), whose sum is σ = 171221760. Its totient is φ = 25683228.

The previous prime is 77049733. The next prime is 77049767. The reversal of 77049738 is 83794077.

It is a junction number, because it is equal to n+sod(n) for n = 77049693 and 77049702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77049733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713370 + ... + 713477.

It is an arithmetic number, because the mean of its divisors is an integer number (10701360).

Almost surely, 2^77049738 is an apocalyptic number.

77049738 is an abundant number, since it is smaller than the sum of its proper divisors (94172022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77049738 is a wasteful number, since it uses less digits than its factorization.

77049738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426858 (or 1426852 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 77049738 is about 8777.7980154478. The cubic root of 77049738 is about 425.5236691376.

The spelling of 77049738 in words is "seventy-seven million, forty-nine thousand, seven hundred thirty-eight".