71149438 has 8 divisors (see below), whose sum is σ = 106963200. Its totient is φ = 35495040.

The previous prime is 71149381. The next prime is 71149439. The reversal of 71149438 is 83494117.

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

It is a junction number, because it is equal to n+sod(n) for n = 71149397 and 71149406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71149439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38718 + ... + 40513.

It is an arithmetic number, because the mean of its divisors is an integer number (13370400).

Almost surely, 2^71149438 is an apocalyptic number.

71149438 is a deficient number, since it is larger than the sum of its proper divisors (35813762).

71149438 is a wasteful number, since it uses less digits than its factorization.

71149438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79682.

The product of its digits is 24192, while the sum is 37.

The square root of 71149438 is about 8435.0126259538. The cubic root of 71149438 is about 414.3720856892.

It can be divided in two parts, 7 and 1149438, that multiplied together give a triangular number (8046066 = T₄₀₁₁).

The spelling of 71149438 in words is "seventy-one million, one hundred forty-nine thousand, four hundred thirty-eight".