71425978 has 32 divisors (see below), whose sum is σ = 122250240. Its totient is φ = 31026240.

The previous prime is 71425969. The next prime is 71425979. The reversal of 71425978 is 87952417.

It is not an unprimeable number, because it can be changed into a prime (71425979) 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, 93976 + ... + 94732.

It is an arithmetic number, because the mean of its divisors is an integer number (3820320).

Almost surely, 2^71425978 is an apocalyptic number.

71425978 is a deficient number, since it is larger than the sum of its proper divisors (50824262).

71425978 is a wasteful number, since it uses less digits than its factorization.

71425978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982.

The product of its digits is 141120, while the sum is 43.

The square root of 71425978 is about 8451.3891165891. The cubic root of 71425978 is about 414.9082450654.

The spelling of 71425978 in words is "seventy-one million, four hundred twenty-five thousand, nine hundred seventy-eight".