71485830 has 48 divisors (see below), whose sum is σ = 200163600. Its totient is φ = 17596224.

The previous prime is 71485829. The next prime is 71485831. The reversal of 71485830 is 3858417.

71485830 is a `hidden beast` number, since 71 + 4 + 8 + 583 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (71485829) and next prime (71485831).

It is a super-2 number, since 2×71485830² = 10220447781577800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71485831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29380 + ... + 31719.

It is an arithmetic number, because the mean of its divisors is an integer number (4170075).

Almost surely, 2^71485830 is an apocalyptic number.

71485830 is an abundant number, since it is smaller than the sum of its proper divisors (128677770).

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

71485830 is a wasteful number, since it uses less digits than its factorization.

71485830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61125 (or 61122 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 71485830 is about 8454.9293314610. The cubic root of 71485830 is about 415.0241046627.

The spelling of 71485830 in words is "seventy-one million, four hundred eighty-five thousand, eight hundred thirty".