71621260 has 48 divisors (see below), whose sum is σ = 162217440. Its totient is φ = 26472960.

The previous prime is 71621257. The next prime is 71621261. The reversal of 71621260 is 6212617.

It is not an unprimeable number, because it can be changed into a prime (71621261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13282 + ... + 17878.

It is an arithmetic number, because the mean of its divisors is an integer number (3379530).

Almost surely, 2^71621260 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 71621260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81108720).

71621260 is an abundant number, since it is smaller than the sum of its proper divisors (90596180).

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

71621260 is a wasteful number, since it uses less digits than its factorization.

71621260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666 (or 4664 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 71621260 is about 8462.9344792454. The cubic root of 71621260 is about 415.2860272341.

Adding to 71621260 its reverse (6212617), we get a palindrome (77833877).

The spelling of 71621260 in words is "seventy-one million, six hundred twenty-one thousand, two hundred sixty".