75449984 has 16 divisors (see below), whose sum is σ = 150310770. Its totient is φ = 37724928.

The previous prime is 75449951. The next prime is 75449989. The reversal of 75449984 is 48994457.

It can be written as a sum of positive squares in only one way, i.e., 75342400 + 107584 = 8680^2 + 328^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (75449989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 294599 + ... + 294854.

Almost surely, 2^75449984 is an apocalyptic number.

It is an amenable number.

75449984 is a deficient number, since it is larger than the sum of its proper divisors (74860786).

75449984 is an equidigital number, since it uses as much as digits as its factorization.

75449984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589467 (or 589455 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 75449984 is about 8686.1950242900. The cubic root of 75449984 is about 422.5580541820.

The spelling of 75449984 in words is "seventy-five million, four hundred forty-nine thousand, nine hundred eighty-four".