75720448 has 72 divisors (see below), whose sum is σ = 162473472. Its totient is φ = 35094528.

The previous prime is 75720433. The next prime is 75720451. The reversal of 75720448 is 84402757.

It is a congruent number.

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, 552636 + ... + 552772.

It is an arithmetic number, because the mean of its divisors is an integer number (2256576).

Almost surely, 2^75720448 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 75720448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81236736).

75720448 is an abundant number, since it is smaller than the sum of its proper divisors (86753024).

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

75720448 is a wasteful number, since it uses less digits than its factorization.

75720448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 75720448 is about 8701.7497091102. The cubic root of 75720448 is about 423.0623637762.

The spelling of 75720448 in words is "seventy-five million, seven hundred twenty thousand, four hundred forty-eight".