71928838 has 4 divisors (see below), whose sum is σ = 107893260. Its totient is φ = 35964418.

The previous prime is 71928827. The next prime is 71928839. The reversal of 71928838 is 83882917.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71928839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17982208 + ... + 17982211.

It is an arithmetic number, because the mean of its divisors is an integer number (26973315).

Almost surely, 2^71928838 is an apocalyptic number.

71928838 is a deficient number, since it is larger than the sum of its proper divisors (35964422).

71928838 is a wasteful number, since it uses less digits than its factorization.

71928838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35964421.

The product of its digits is 193536, while the sum is 46.

The square root of 71928838 is about 8481.0870765486. The cubic root of 71928838 is about 415.8796611673.

The spelling of 71928838 in words is "seventy-one million, nine hundred twenty-eight thousand, eight hundred thirty-eight".