77134460 has 48 divisors (see below), whose sum is σ = 175308672. Its totient is φ = 28339200.

The previous prime is 77134441. The next prime is 77134483. The reversal of 77134460 is 6443177.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62045 + ... + 63275.

It is an arithmetic number, because the mean of its divisors is an integer number (3652264).

Almost surely, 2^77134460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77134460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87654336).

77134460 is an abundant number, since it is smaller than the sum of its proper divisors (98174212).

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

77134460 is a wasteful number, since it uses less digits than its factorization.

77134460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494 (or 1492 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 77134460 is about 8782.6226151418. The cubic root of 77134460 is about 425.6795771334.

The spelling of 77134460 in words is "seventy-seven million, one hundred thirty-four thousand, four hundred sixty".