73284845 has 4 divisors (see below), whose sum is σ = 87941820. Its totient is φ = 58627872.

The previous prime is 73284839. The next prime is 73284847. The reversal of 73284845 is 54848237.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54848237 = 547 ⋅100271.

It can be written as a sum of positive squares in 2 ways, for example, as 49294441 + 23990404 = 7021^2 + 4898^2 .

It is a cyclic number.

It is not a de Polignac number, because 73284845 - 2⁶ = 73284781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73284847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7328480 + ... + 7328489.

It is an arithmetic number, because the mean of its divisors is an integer number (21985455).

Almost surely, 2^73284845 is an apocalyptic number.

It is an amenable number.

73284845 is a deficient number, since it is larger than the sum of its proper divisors (14656975).

73284845 is a wasteful number, since it uses less digits than its factorization.

73284845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14656974.

The product of its digits is 215040, while the sum is 41.

The square root of 73284845 is about 8560.6568089137. The cubic root of 73284845 is about 418.4768049486.

The spelling of 73284845 in words is "seventy-three million, two hundred eighty-four thousand, eight hundred forty-five".