71151988 has 24 divisors (see below), whose sum is σ = 126334208. Its totient is φ = 35060256.

The previous prime is 71151961. The next prime is 71151989. The reversal of 71151988 is 88915117.

It is a self number, because there is not a number n which added to its sum of digits gives 71151988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71151989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153445 + ... + 153907.

Almost surely, 2^71151988 is an apocalyptic number.

It is an amenable number.

71151988 is a deficient number, since it is larger than the sum of its proper divisors (55182220).

71151988 is a wasteful number, since it uses less digits than its factorization.

71151988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 941 counting only the distinct ones).

The product of its digits is 20160, while the sum is 40.

The square root of 71151988 is about 8435.1637802713. The cubic root of 71151988 is about 414.3770360033.

The spelling of 71151988 in words is "seventy-one million, one hundred fifty-one thousand, nine hundred eighty-eight".