71630230 has 16 divisors (see below), whose sum is σ = 147353760. Its totient is φ = 24558912.

The previous prime is 71630219. The next prime is 71630233. The reversal of 71630230 is 3203617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71630233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511575 + ... + 511714.

It is an arithmetic number, because the mean of its divisors is an integer number (9209610).

Almost surely, 2^71630230 is an apocalyptic number.

71630230 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71630230 is an abundant number, since it is smaller than the sum of its proper divisors (75723530).

71630230 is a wasteful number, since it uses less digits than its factorization.

71630230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023303.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 71630230 is about 8463.4644206731. The cubic root of 71630230 is about 415.3033636142.

Adding to 71630230 its reverse (3203617), we get a palindrome (74833847).

The spelling of 71630230 in words is "seventy-one million, six hundred thirty thousand, two hundred thirty".