43728749862 has 64 divisors (see below), whose sum is σ = 104421381120. Its totient is φ = 11936479104.

The previous prime is 43728749837. The next prime is 43728749863. The reversal of 43728749862 is 26894782734.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 43728749796 and 43728749805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43728749863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 797464 + ... + 850532.

It is an arithmetic number, because the mean of its divisors is an integer number (1631584080).

Almost surely, 2^43728749862 is an apocalyptic number.

43728749862 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 43728749862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52210690560).

43728749862 is an abundant number, since it is smaller than the sum of its proper divisors (60692631258).

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

43728749862 is a wasteful number, since it uses less digits than its factorization.

43728749862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53957.

The product of its digits is 32514048, while the sum is 60.

The spelling of 43728749862 in words is "forty-three billion, seven hundred twenty-eight million, seven hundred forty-nine thousand, eight hundred sixty-two".