71291478 has 8 divisors (see below), whose sum is σ = 142582968. Its totient is φ = 23763824.

The previous prime is 71291461. The next prime is 71291501. The reversal of 71291478 is 87419217.

It is a sphenic number, since it is the product of 3 distinct primes.

71291478 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5940951 + ... + 5940962.

It is an arithmetic number, because the mean of its divisors is an integer number (17822871).

Almost surely, 2^71291478 is an apocalyptic number.

71291478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71291478 is a wasteful number, since it uses less digits than its factorization.

71291478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11881918.

The product of its digits is 28224, while the sum is 39.

The square root of 71291478 is about 8443.4280952703. The cubic root of 71291478 is about 414.6476478918.

The spelling of 71291478 in words is "seventy-one million, two hundred ninety-one thousand, four hundred seventy-eight".