71155260 has 180 divisors, whose sum is σ = 246213240. Its totient is φ = 17249760.

The previous prime is 71155211. The next prime is 71155267. The reversal of 71155260 is 6255117.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71155267) 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, 6468655 + ... + 6468665.

Almost surely, 2^71155260 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 71155260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123106620).

71155260 is an abundant number, since it is smaller than the sum of its proper divisors (175057980).

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

71155260 is an equidigital number, since it uses as much as digits as its factorization.

71155260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 71155260 is about 8435.3577280398. The cubic root of 71155260 is about 414.3833877625.

The spelling of 71155260 in words is "seventy-one million, one hundred fifty-five thousand, two hundred sixty".