77030744 has 96 divisors (see below), whose sum is σ = 177785280. Its totient is φ = 31159296.

The previous prime is 77030719. The next prime is 77030747. The reversal of 77030744 is 44703077.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77030744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77030747) 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 23 ways as a sum of consecutive naturals, for example, 681632 + ... + 681744.

It is an arithmetic number, because the mean of its divisors is an integer number (1851930).

Almost surely, 2^77030744 is an apocalyptic number.

77030744 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77030744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88892640).

77030744 is an abundant number, since it is smaller than the sum of its proper divisors (100754536).

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

77030744 is a wasteful number, since it uses less digits than its factorization.

77030744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 77030744 is about 8776.7160145467. The cubic root of 77030744 is about 425.4887001206.

The spelling of 77030744 in words is "seventy-seven million, thirty thousand, seven hundred forty-four".