71109378 has 24 divisors (see below), whose sum is σ = 156372528. Its totient is φ = 23348952.

The previous prime is 71109377. The next prime is 71109383. The reversal of 71109378 is 87390117.

It is not an unprimeable number, because it can be changed into a prime (71109371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28276 + ... + 30687.

It is an arithmetic number, because the mean of its divisors is an integer number (6515522).

Almost surely, 2^71109378 is an apocalyptic number.

71109378 is an abundant number, since it is smaller than the sum of its proper divisors (85263150).

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

71109378 is a wasteful number, since it uses less digits than its factorization.

71109378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59038 (or 59035 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 71109378 is about 8432.6376656418. The cubic root of 71109378 is about 414.2943016962.

The spelling of 71109378 in words is "seventy-one million, one hundred nine thousand, three hundred seventy-eight".