71153228 has 12 divisors (see below), whose sum is σ = 131842872. Its totient is φ = 33483840.

The previous prime is 71153227. The next prime is 71153231. The reversal of 71153228 is 82235117.

It is a self number, because there is not a number n which added to its sum of digits gives 71153228.

It is not an unprimeable number, because it can be changed into a prime (71153221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523118 + ... + 523253.

It is an arithmetic number, because the mean of its divisors is an integer number (10986906).

Almost surely, 2^71153228 is an apocalyptic number.

It is an amenable number.

71153228 is a deficient number, since it is larger than the sum of its proper divisors (60689644).

71153228 is a wasteful number, since it uses less digits than its factorization.

71153228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046392 (or 1046390 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 71153228 is about 8435.2372817841. The cubic root of 71153228 is about 414.3794431721.

The spelling of 71153228 in words is "seventy-one million, one hundred fifty-three thousand, two hundred twenty-eight".