77040838 has 48 divisors (see below), whose sum is σ = 143828784. Its totient is φ = 30750720.

The previous prime is 77040829. The next prime is 77040841. The reversal of 77040838 is 83804077.

It is a junction number, because it is equal to n+sod(n) for n = 77040797 and 77040806.

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 23 ways as a sum of consecutive naturals, for example, 218070 + ... + 218422.

It is an arithmetic number, because the mean of its divisors is an integer number (2996433).

Almost surely, 2^77040838 is an apocalyptic number.

77040838 is a deficient number, since it is larger than the sum of its proper divisors (66787946).

77040838 is a wasteful number, since it uses less digits than its factorization.

77040838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 77040838 is about 8777.2910399508. The cubic root of 77040838 is about 425.5072844551.

The spelling of 77040838 in words is "seventy-seven million, forty thousand, eight hundred thirty-eight".