75480144 has 40 divisors (see below), whose sum is σ = 196035072. Its totient is φ = 25025280.

The previous prime is 75480137. The next prime is 75480149. The reversal of 75480144 is 44108457.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75480149) 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, 5052 + ... + 13284.

Almost surely, 2^75480144 is an apocalyptic number.

It is an amenable number.

75480144 is an abundant number, since it is smaller than the sum of its proper divisors (120554928).

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

75480144 is a wasteful number, since it uses less digits than its factorization.

75480144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435 (or 8429 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 75480144 is about 8687.9309389520. The cubic root of 75480144 is about 422.6143504306.

The spelling of 75480144 in words is "seventy-five million, four hundred eighty thousand, one hundred forty-four".