71895390 has 32 divisors (see below), whose sum is σ = 197199360. Its totient is φ = 16433184.

The previous prime is 71895389. The next prime is 71895391. The reversal of 71895390 is 9359817.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71895389) and next prime (71895391).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71895391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170970 + ... + 171389.

It is an arithmetic number, because the mean of its divisors is an integer number (6162480).

Almost surely, 2^71895390 is an apocalyptic number.

71895390 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71895390 is an abundant number, since it is smaller than the sum of its proper divisors (125303970).

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

71895390 is a wasteful number, since it uses less digits than its factorization.

71895390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342376.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 71895390 is about 8479.1149302271. The cubic root of 71895390 is about 415.8151877237.

The spelling of 71895390 in words is "seventy-one million, eight hundred ninety-five thousand, three hundred ninety".