71345730 has 16 divisors (see below), whose sum is σ = 171229824. Its totient is φ = 19025520.

The previous prime is 71345723. The next prime is 71345777. The reversal of 71345730 is 3754317.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2378191 = 71345730 / (7 + 1 + 3 + 4 + 5 + 7 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1189066 + ... + 1189125.

It is an arithmetic number, because the mean of its divisors is an integer number (10701864).

Almost surely, 2^71345730 is an apocalyptic number.

71345730 is an abundant number, since it is smaller than the sum of its proper divisors (99884094).

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

71345730 is a wasteful number, since it uses less digits than its factorization.

71345730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378201.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 71345730 is about 8446.6401604425. The cubic root of 71345730 is about 414.7528019297.

The spelling of 71345730 in words is "seventy-one million, three hundred forty-five thousand, seven hundred thirty".