77441872 has 40 divisors (see below), whose sum is σ = 158695200. Its totient is φ = 36508032.

The previous prime is 77441869. The next prime is 77441873. The reversal of 77441872 is 27814477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77441873) 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, 81303 + ... + 82249.

It is an arithmetic number, because the mean of its divisors is an integer number (3967380).

Almost surely, 2^77441872 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 77441872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79347600).

77441872 is an abundant number, since it is smaller than the sum of its proper divisors (81253328).

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

77441872 is a wasteful number, since it uses less digits than its factorization.

77441872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1237 counting only the distinct ones).

The product of its digits is 87808, while the sum is 40.

The square root of 77441872 is about 8800.1063629936. The cubic root of 77441872 is about 426.2443292647.

The spelling of 77441872 in words is "seventy-seven million, four hundred forty-one thousand, eight hundred seventy-two".