71400147 has 32 divisors (see below), whose sum is σ = 120046080. Its totient is φ = 36737280.

The previous prime is 71400143. The next prime is 71400163. The reversal of 71400147 is 74100417.

It is not a de Polignac number, because 71400147 - 2² = 71400143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71400143) 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 31 ways as a sum of consecutive naturals, for example, 8004 + ... + 14382.

It is an arithmetic number, because the mean of its divisors is an integer number (3751440).

Almost surely, 2^71400147 is an apocalyptic number.

71400147 is a deficient number, since it is larger than the sum of its proper divisors (48645933).

71400147 is a wasteful number, since it uses less digits than its factorization.

71400147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 71400147 is about 8449.8607680837. The cubic root of 71400147 is about 414.8582222426.

The spelling of 71400147 in words is "seventy-one million, four hundred thousand, one hundred forty-seven".