71073288 has 240 divisors, whose sum is σ = 239144400. Its totient is φ = 19543680.

The previous prime is 71073283. The next prime is 71073293. The reversal of 71073288 is 88237017.

It is an interprime number because it is at equal distance from previous prime (71073283) and next prime (71073293).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (71073283) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1204603 + ... + 1204661.

It is an arithmetic number, because the mean of its divisors is an integer number (996435).

Almost surely, 2^71073288 is an apocalyptic number.

71073288 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71073288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119572200).

71073288 is an abundant number, since it is smaller than the sum of its proper divisors (168071112).

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

71073288 is a wasteful number, since it uses less digits than its factorization.

71073288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 71073288 is about 8430.4974942171. The cubic root of 71073288 is about 414.2242011835.

The spelling of 71073288 in words is "seventy-one million, seventy-three thousand, two hundred eighty-eight".