43721068 has 12 divisors (see below), whose sum is σ = 79838640. Its totient is φ = 20910032.

The previous prime is 43721063. The next prime is 43721107. The reversal of 43721068 is 86012734.

It is not an unprimeable number, because it can be changed into a prime (43721063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237523 + ... + 237706.

It is an arithmetic number, because the mean of its divisors is an integer number (6653220).

Almost surely, 2^43721068 is an apocalyptic number.

It is an amenable number.

43721068 is a deficient number, since it is larger than the sum of its proper divisors (36117572).

43721068 is a wasteful number, since it uses less digits than its factorization.

43721068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475256 (or 475254 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 43721068 is about 6612.1908623390. The cubic root of 43721068 is about 352.2872461620.

The spelling of 43721068 in words is "forty-three million, seven hundred twenty-one thousand, sixty-eight".