77830258 has 32 divisors (see below), whose sum is σ = 134861760. Its totient is φ = 33351360.

The previous prime is 77830253. The next prime is 77830273. The reversal of 77830258 is 85203877.

It is a self number, because there is not a number n which added to its sum of digits gives 77830258.

It is not an unprimeable number, because it can be changed into a prime (77830253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26016 + ... + 28852.

It is an arithmetic number, because the mean of its divisors is an integer number (4214430).

Almost surely, 2^77830258 is an apocalyptic number.

77830258 is a deficient number, since it is larger than the sum of its proper divisors (57031502).

77830258 is a wasteful number, since it uses less digits than its factorization.

77830258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 77830258 is about 8822.1458840806. The cubic root of 77830258 is about 426.9557073330.

The spelling of 77830258 in words is "seventy-seven million, eight hundred thirty thousand, two hundred fifty-eight".