71429438 has 8 divisors (see below), whose sum is σ = 107369280. Its totient is φ = 35639680.

The previous prime is 71429429. The next prime is 71429441. The reversal of 71429438 is 83492417.

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

It is a super-3 number, since 3×71429438³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 36323 + ... + 38238.

It is an arithmetic number, because the mean of its divisors is an integer number (13421160).

Almost surely, 2^71429438 is an apocalyptic number.

71429438 is a deficient number, since it is larger than the sum of its proper divisors (35939842).

71429438 is a wasteful number, since it uses less digits than its factorization.

71429438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75042.

The product of its digits is 48384, while the sum is 38.

The square root of 71429438 is about 8451.5938141868. The cubic root of 71429438 is about 414.9149445856.

The spelling of 71429438 in words is "seventy-one million, four hundred twenty-nine thousand, four hundred thirty-eight".