71238130 has 16 divisors (see below), whose sum is σ = 133804224. Its totient is φ = 27256240.

The previous prime is 71238121. The next prime is 71238131. The reversal of 71238130 is 3183217.

It is a junction number, because it is equal to n+sod(n) for n = 71238095 and 71238104.

It is not an unprimeable number, because it can be changed into a prime (71238131) 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, 154636 + ... + 155095.

It is an arithmetic number, because the mean of its divisors is an integer number (8362764).

Almost surely, 2^71238130 is an apocalyptic number.

71238130 is a deficient number, since it is larger than the sum of its proper divisors (62566094).

71238130 is a wasteful number, since it uses less digits than its factorization.

71238130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309761.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 71238130 is about 8440.2683606625. The cubic root of 71238130 is about 414.5441939993.

The spelling of 71238130 in words is "seventy-one million, two hundred thirty-eight thousand, one hundred thirty".