75226720 has 24 divisors (see below), whose sum is σ = 177723504. Its totient is φ = 30090624.

The previous prime is 75226703. The next prime is 75226741. The reversal of 75226720 is 2762257.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234924 + ... + 235243.

It is an arithmetic number, because the mean of its divisors is an integer number (7405146).

Almost surely, 2^75226720 is an apocalyptic number.

It is an amenable number.

75226720 is an abundant number, since it is smaller than the sum of its proper divisors (102496784).

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

75226720 is a wasteful number, since it uses less digits than its factorization.

75226720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470182 (or 470174 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 75226720 is about 8673.3338457597. Note that the first 3 decimals coincide. The cubic root of 75226720 is about 422.1408452997.

Adding to 75226720 its reverse (2762257), we get a palindrome (77988977).

It can be divided in two parts, 752 and 26720, that added together give a palindrome (27472).

The spelling of 75226720 in words is "seventy-five million, two hundred twenty-six thousand, seven hundred twenty".