71154240 has 224 divisors, whose sum is σ = 245790720. Its totient is φ = 17381376.

The previous prime is 71154211. The next prime is 71154263. The reversal of 71154240 is 4245117.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 71154240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 857239 + ... + 857321.

It is an arithmetic number, because the mean of its divisors is an integer number (1097280).

Almost surely, 2^71154240 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 71154240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122895360).

71154240 is an abundant number, since it is smaller than the sum of its proper divisors (174636480).

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

71154240 is a wasteful number, since it uses less digits than its factorization.

71154240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 71154240 is about 8435.2972680280. The cubic root of 71154240 is about 414.3814077117.

Adding to 71154240 its reverse (4245117), we get a palindrome (75399357).

The spelling of 71154240 in words is "seventy-one million, one hundred fifty-four thousand, two hundred forty".