76449912 has 128 divisors (see below), whose sum is σ = 244339200. Its totient is φ = 19353600.

The previous prime is 76449859. The next prime is 76449917. The reversal of 76449912 is 21994467.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76449917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75264 + ... + 76272.

It is an arithmetic number, because the mean of its divisors is an integer number (1908900).

Almost surely, 2^76449912 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 76449912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122169600).

76449912 is an abundant number, since it is smaller than the sum of its proper divisors (167889288).

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

76449912 is a wasteful number, since it uses less digits than its factorization.

76449912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1073 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 76449912 is about 8743.5640330474. The cubic root of 76449912 is about 424.4165687636.

Subtracting from 76449912 its reverse (21994467), we obtain a palindrome (54455445).

The spelling of 76449912 in words is "seventy-six million, four hundred forty-nine thousand, nine hundred twelve".