77230860 has 144 divisors (see below), whose sum is σ = 254913120. Its totient is φ = 17418240.

The previous prime is 77230843. The next prime is 77230871. The reversal of 77230860 is 6803277.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 320340 + ... + 320580.

It is an arithmetic number, because the mean of its divisors is an integer number (1770230).

Almost surely, 2^77230860 is an apocalyptic number.

77230860 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77230860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127456560).

77230860 is an abundant number, since it is smaller than the sum of its proper divisors (177682260).

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

77230860 is a wasteful number, since it uses less digits than its factorization.

77230860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 77230860 is about 8788.1090116134. The cubic root of 77230860 is about 425.8568365502.

The spelling of 77230860 in words is "seventy-seven million, two hundred thirty thousand, eight hundred sixty".