75220860 has 144 divisors (see below), whose sum is σ = 249627168. Its totient is φ = 16811520.

The previous prime is 75220853. The next prime is 75220883. The reversal of 75220860 is 6802257.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93982 + ... + 94778.

It is an arithmetic number, because the mean of its divisors is an integer number (1733522).

Almost surely, 2^75220860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75220860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124813584).

75220860 is an abundant number, since it is smaller than the sum of its proper divisors (174406308).

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

75220860 is a wasteful number, since it uses less digits than its factorization.

75220860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 75220860 is about 8672.9960221368. The cubic root of 75220860 is about 422.1298837265.

It can be divided in two parts, 752 and 20860, that added together give a palindrome (21612).

The spelling of 75220860 in words is "seventy-five million, two hundred twenty thousand, eight hundred sixty".