71427870 has 48 divisors (see below), whose sum is σ = 192123360. Its totient is φ = 18389952.

The previous prime is 71427847. The next prime is 71427877. The reversal of 71427870 is 7872417.

It is a super-2 number, since 2×71427870² = 10203881225473800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71427877) 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 23 ways as a sum of consecutive naturals, for example, 11074 + ... + 16293.

It is an arithmetic number, because the mean of its divisors is an integer number (4002570).

Almost surely, 2^71427870 is an apocalyptic number.

71427870 is an abundant number, since it is smaller than the sum of its proper divisors (120695490).

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

71427870 is a wasteful number, since it uses less digits than its factorization.

71427870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27409 (or 27406 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 71427870 is about 8451.5010501094. The cubic root of 71427870 is about 414.9119085292.

The spelling of 71427870 in words is "seventy-one million, four hundred twenty-seven thousand, eight hundred seventy".