78271488 has 176 divisors, whose sum is σ = 245640000. Its totient is φ = 24551424.

The previous prime is 78271441. The next prime is 78271489. The reversal of 78271488 is 88417287.

It is a super-2 number, since 2×78271488² = 12252851667468288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78271489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525238 + ... + 525386.

Almost surely, 2^78271488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78271488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122820000).

78271488 is an abundant number, since it is smaller than the sum of its proper divisors (167368512).

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

78271488 is a wasteful number, since it uses less digits than its factorization.

78271488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 173 counting only the distinct ones).

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

The square root of 78271488 is about 8847.1174966765. The cubic root of 78271488 is about 427.7610101984.

The spelling of 78271488 in words is "seventy-eight million, two hundred seventy-one thousand, four hundred eighty-eight".