71045730 has 48 divisors (see below), whose sum is σ = 211109184. Its totient is φ = 16238880.

The previous prime is 71045729. The next prime is 71045749. The reversal of 71045730 is 3754017.

It is a junction number, because it is equal to n+sod(n) for n = 71045694 and 71045703.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55756 + ... + 57015.

It is an arithmetic number, because the mean of its divisors is an integer number (4398108).

Almost surely, 2^71045730 is an apocalyptic number.

71045730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71045730 is an abundant number, since it is smaller than the sum of its proper divisors (140063454).

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

71045730 is a wasteful number, since it uses less digits than its factorization.

71045730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112791 (or 112788 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 71045730 is about 8428.8629126354. The cubic root of 71045730 is about 414.1706570811.

Adding to 71045730 its reverse (3754017), we get a palindrome (74799747).

The spelling of 71045730 in words is "seventy-one million, forty-five thousand, seven hundred thirty".