77944230 has 192 divisors, whose sum is σ = 258306048. Its totient is φ = 15863040.

The previous prime is 77944219. The next prime is 77944267. The reversal of 77944230 is 3244977.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 253737 + ... + 254043.

It is an arithmetic number, because the mean of its divisors is an integer number (1345344).

Almost surely, 2^77944230 is an apocalyptic number.

77944230 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 77944230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129153024).

77944230 is an abundant number, since it is smaller than the sum of its proper divisors (180361818).

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

77944230 is a wasteful number, since it uses less digits than its factorization.

77944230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 77944230 is about 8828.6029472392. The cubic root of 77944230 is about 427.1640121917.

The spelling of 77944230 in words is "seventy-seven million, nine hundred forty-four thousand, two hundred thirty".