75222730 has 16 divisors (see below), whose sum is σ = 147710304. Its totient is φ = 27353680.

The previous prime is 75222713. The next prime is 75222731. The reversal of 75222730 is 3722257.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (75222731) 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, 341812 + ... + 342031.

It is an arithmetic number, because the mean of its divisors is an integer number (9231894).

Almost surely, 2^75222730 is an apocalyptic number.

75222730 is a deficient number, since it is larger than the sum of its proper divisors (72487574).

75222730 is a wasteful number, since it uses less digits than its factorization.

75222730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683861.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 75222730 is about 8673.1038273504. The cubic root of 75222730 is about 422.1333817648.

Adding to 75222730 its reverse (3722257), we get a palindrome (78944987).

It can be divided in two parts, 752227 and 30, that added together give a palindrome (752257).

The spelling of 75222730 in words is "seventy-five million, two hundred twenty-two thousand, seven hundred thirty".