77127492 has 24 divisors (see below), whose sum is σ = 193807936. Its totient is φ = 23731488.

The previous prime is 77127467. The next prime is 77127497. The reversal of 77127492 is 29472177.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 77127492.

It is not an unprimeable number, because it can be changed into a prime (77127497) 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 7 ways as a sum of consecutive naturals, for example, 247048 + ... + 247359.

Almost surely, 2^77127492 is an apocalyptic number.

It is an amenable number.

77127492 is an abundant number, since it is smaller than the sum of its proper divisors (116680444).

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

77127492 is a wasteful number, since it uses less digits than its factorization.

77127492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494427 (or 494425 counting only the distinct ones).

The product of its digits is 49392, while the sum is 39.

The square root of 77127492 is about 8782.2259137419. The cubic root of 77127492 is about 425.6667587182. Note that the first 3 decimals are identical.

The spelling of 77127492 in words is "seventy-seven million, one hundred twenty-seven thousand, four hundred ninety-two".