77830458 has 8 divisors (see below), whose sum is σ = 155660928. Its totient is φ = 25943484.

The previous prime is 77830427. The next prime is 77830481. The reversal of 77830458 is 85403877.

It is a sphenic number, since it is the product of 3 distinct primes.

77830458 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 6485866 + ... + 6485877.

It is an arithmetic number, because the mean of its divisors is an integer number (19457616).

Almost surely, 2^77830458 is an apocalyptic number.

77830458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77830458 is a wasteful number, since it uses less digits than its factorization.

77830458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12971748.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 77830458 is about 8822.1572191840. The cubic root of 77830458 is about 426.9560730480.

The spelling of 77830458 in words is "seventy-seven million, eight hundred thirty thousand, four hundred fifty-eight".