71427340 has 48 divisors (see below), whose sum is σ = 153990144. Its totient is φ = 27820800.

The previous prime is 71427337. The next prime is 71427341. The reversal of 71427340 is 4372417.

It is a junction number, because it is equal to n+sod(n) for n = 71427299 and 71427308.

It is not an unprimeable number, because it can be changed into a prime (71427341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154710 + ... + 155170.

It is an arithmetic number, because the mean of its divisors is an integer number (3208128).

Almost surely, 2^71427340 is an apocalyptic number.

It is an amenable number.

71427340 is an abundant number, since it is smaller than the sum of its proper divisors (82562804).

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

71427340 is a wasteful number, since it uses less digits than its factorization.

71427340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 71427340 is about 8451.4696946744. The cubic root of 71427340 is about 414.9108823012.

Adding to 71427340 its reverse (4372417), we get a palindrome (75799757).

The spelling of 71427340 in words is "seventy-one million, four hundred twenty-seven thousand, three hundred forty".