76438845 has 48 divisors (see below), whose sum is σ = 152231040. Its totient is φ = 34756992.

The previous prime is 76438837. The next prime is 76438847. The reversal of 76438845 is 54883467.

It is not a de Polignac number, because 76438845 - 2³ = 76438837 is a prime.

It is a Smith number, since the sum of its digits (45) 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 (45).

It is a self number, because there is not a number n which added to its sum of digits gives 76438845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76438847) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70971 + ... + 72039.

It is an arithmetic number, because the mean of its divisors is an integer number (3171480).

Almost surely, 2^76438845 is an apocalyptic number.

It is an amenable number.

76438845 is a deficient number, since it is larger than the sum of its proper divisors (75792195).

76438845 is a wasteful number, since it uses less digits than its factorization.

76438845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 1311 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 76438845 is about 8742.9311446448. The cubic root of 76438845 is about 424.3960880562.

The spelling of 76438845 in words is "seventy-six million, four hundred thirty-eight thousand, eight hundred forty-five".