71278488 has 32 divisors (see below), whose sum is σ = 197996400. Its totient is φ = 23759424.

The previous prime is 71278483. The next prime is 71278489. The reversal of 71278488 is 88487217.

It is a super-2 number, since 2×71278488² = 10161245703132288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71278483) 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, 164781 + ... + 165212.

Almost surely, 2^71278488 is an apocalyptic number.

It is an amenable number.

71278488 is an abundant number, since it is smaller than the sum of its proper divisors (126717912).

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

71278488 is a wasteful number, since it uses less digits than its factorization.

71278488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330008 (or 329998 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 71278488 is about 8442.6588229064. The cubic root of 71278488 is about 414.6224620852.

The spelling of 71278488 in words is "seventy-one million, two hundred seventy-eight thousand, four hundred eighty-eight".