71642336 has 12 divisors (see below), whose sum is σ = 141045912. Its totient is φ = 35821152.

The previous prime is 71642327. The next prime is 71642341. The reversal of 71642336 is 63324617.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 2238823 = 71642336 / (7 + 1 + 6 + 4 + 2 + 3 + 3 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119380 + ... + 1119443.

It is an arithmetic number, because the mean of its divisors is an integer number (11753826).

Almost surely, 2^71642336 is an apocalyptic number.

It is an amenable number.

71642336 is a deficient number, since it is larger than the sum of its proper divisors (69403576).

71642336 is a wasteful number, since it uses less digits than its factorization.

71642336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238833 (or 2238825 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 71642336 is about 8464.1795822159. The cubic root of 71642336 is about 415.3267586683.

The spelling of 71642336 in words is "seventy-one million, six hundred forty-two thousand, three hundred thirty-six".