71378814 has 16 divisors (see below), whose sum is σ = 153739152. Its totient is φ = 21962688.

The previous prime is 71378803. The next prime is 71378819. The reversal of 71378814 is 41887317.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71378819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457479 + ... + 457634.

It is an arithmetic number, because the mean of its divisors is an integer number (9608697).

Almost surely, 2^71378814 is an apocalyptic number.

71378814 is an abundant number, since it is smaller than the sum of its proper divisors (82360338).

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

71378814 is a wasteful number, since it uses less digits than its factorization.

71378814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915131.

The product of its digits is 37632, while the sum is 39.

The square root of 71378814 is about 8448.5983452878. The cubic root of 71378814 is about 414.8169008896.

It can be divided in two parts, 7137 and 8814, that added together give a palindrome (15951).

The spelling of 71378814 in words is "seventy-one million, three hundred seventy-eight thousand, eight hundred fourteen".