76744428 has 12 divisors (see below), whose sum is σ = 179070360. Its totient is φ = 25581472.

The previous prime is 76744321. The next prime is 76744429. The reversal of 76744428 is 82444767.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 76744428.

It is not an unprimeable number, because it can be changed into a prime (76744429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3197673 + ... + 3197696.

It is an arithmetic number, because the mean of its divisors is an integer number (14922530).

Almost surely, 2^76744428 is an apocalyptic number.

It is an amenable number.

76744428 is an abundant number, since it is smaller than the sum of its proper divisors (102325932).

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

76744428 is a wasteful number, since it uses less digits than its factorization.

76744428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395376 (or 6395374 counting only the distinct ones).

The product of its digits is 301056, while the sum is 42.

The square root of 76744428 is about 8760.3897173585. The cubic root of 76744428 is about 424.9608785212.

The spelling of 76744428 in words is "seventy-six million, seven hundred forty-four thousand, four hundred twenty-eight".