71805152 has 12 divisors (see below), whose sum is σ = 141366456. Its totient is φ = 35902560.

The previous prime is 71805133. The next prime is 71805163. The reversal of 71805152 is 25150817.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1121924 + ... + 1121987.

It is an arithmetic number, because the mean of its divisors is an integer number (11780538).

Almost surely, 2^71805152 is an apocalyptic number.

It is an amenable number.

71805152 is a deficient number, since it is larger than the sum of its proper divisors (69561304).

71805152 is a wasteful number, since it uses less digits than its factorization.

71805152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243921 (or 2243913 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 71805152 is about 8473.7920673097. The cubic root of 71805152 is about 415.6411476343.

Adding to 71805152 its reverse (25150817), we get a palindrome (96955969).

The spelling of 71805152 in words is "seventy-one million, eight hundred five thousand, one hundred fifty-two".