47426721 has 8 divisors (see below), whose sum is σ = 64706400. Its totient is φ = 30882432.

The previous prime is 47426693. The next prime is 47426741. The reversal of 47426721 is 12762474.

47426721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47426721 - 2⁷ = 47426593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47426741) 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, 183696 + ... + 183953.

It is an arithmetic number, because the mean of its divisors is an integer number (8088300).

Almost surely, 2^47426721 is an apocalyptic number.

It is an amenable number.

47426721 is a deficient number, since it is larger than the sum of its proper divisors (17279679).

47426721 is a wasteful number, since it uses less digits than its factorization.

47426721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367695.

The product of its digits is 18816, while the sum is 33.

The square root of 47426721 is about 6886.7061066957. The cubic root of 47426721 is about 361.9714907902.

The spelling of 47426721 in words is "forty-seven million, four hundred twenty-six thousand, seven hundred twenty-one".