77530836 has 48 divisors (see below), whose sum is σ = 190370880. Its totient is φ = 24526080.

The previous prime is 77530823. The next prime is 77530841. The reversal of 77530836 is 63803577.

It is a super-2 number, since 2×77530836² = 12022061061717792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77530794 and 77530803.

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, 16075 + ... + 20333.

It is an arithmetic number, because the mean of its divisors is an integer number (3966060).

Almost surely, 2^77530836 is an apocalyptic number.

It is an amenable number.

77530836 is an abundant number, since it is smaller than the sum of its proper divisors (112840044).

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

77530836 is a wasteful number, since it uses less digits than its factorization.

77530836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344 (or 4342 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 77530836 is about 8805.1596237661. The cubic root of 77530836 is about 426.4074877215.

The spelling of 77530836 in words is "seventy-seven million, five hundred thirty thousand, eight hundred thirty-six".