73449970 has 16 divisors (see below), whose sum is σ = 144229248. Its totient is φ = 26709040.

The previous prime is 73449913. The next prime is 73449973. The reversal of 73449970 is 7994437.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (73449973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333754 + ... + 333973.

It is an arithmetic number, because the mean of its divisors is an integer number (9014328).

Almost surely, 2^73449970 is an apocalyptic number.

73449970 is a deficient number, since it is larger than the sum of its proper divisors (70779278).

73449970 is a wasteful number, since it uses less digits than its factorization.

73449970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667745.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 73449970 is about 8570.2957941952. The cubic root of 73449970 is about 418.7908723749.

The spelling of 73449970 in words is "seventy-three million, four hundred forty-nine thousand, nine hundred seventy".