77130412 has 12 divisors (see below), whose sum is σ = 135055816. Its totient is φ = 38543040.

The previous prime is 77130409. The next prime is 77130419. The reversal of 77130412 is 21403177.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77130419) by changing a digit.

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, 4183 + ... + 13105.

Almost surely, 2^77130412 is an apocalyptic number.

It is an amenable number.

77130412 is a deficient number, since it is larger than the sum of its proper divisors (57925404).

77130412 is a wasteful number, since it uses less digits than its factorization.

77130412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11088 (or 11086 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 77130412 is about 8782.3921570379. The cubic root of 77130412 is about 425.6721304787.

Adding to 77130412 its reverse (21403177), we get a palindrome (98533589).

The spelling of 77130412 in words is "seventy-seven million, one hundred thirty thousand, four hundred twelve".