71937918 has 96 divisors (see below), whose sum is σ = 177795072. Its totient is φ = 20865600.

The previous prime is 71937917. The next prime is 71937973. The reversal of 71937918 is 81973917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71937911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 340833 + ... + 341043.

It is an arithmetic number, because the mean of its divisors is an integer number (1852032).

Almost surely, 2^71937918 is an apocalyptic number.

71937918 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71937918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88897536).

71937918 is an abundant number, since it is smaller than the sum of its proper divisors (105857154).

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

71937918 is a wasteful number, since it uses less digits than its factorization.

71937918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 307 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 71937918 is about 8481.6223683916. The cubic root of 71937918 is about 415.8971600757.

The spelling of 71937918 in words is "seventy-one million, nine hundred thirty-seven thousand, nine hundred eighteen".