71380100 has 36 divisors (see below), whose sum is σ = 168978768. Its totient is φ = 25956000.

The previous prime is 71380097. The next prime is 71380121. The reversal of 71380100 is 108317.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31346 + ... + 33545.

Almost surely, 2^71380100 is an apocalyptic number.

It is an amenable number.

71380100 is an abundant number, since it is smaller than the sum of its proper divisors (97598668).

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

71380100 is a wasteful number, since it uses less digits than its factorization.

71380100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64916 (or 64909 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 71380100 is about 8448.6744522440. The cubic root of 71380100 is about 414.8193920646.

Adding to 71380100 its reverse (108317), we get a palindrome (71488417).

The spelling of 71380100 in words is "seventy-one million, three hundred eighty thousand, one hundred".