73428837 has 4 divisors (see below), whose sum is σ = 97905120. Its totient is φ = 48952556.

The previous prime is 73428829. The next prime is 73428847. The reversal of 73428837 is 73882437.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73882437 = 3 ⋅24627479.

It is a cyclic number.

It is not a de Polignac number, because 73428837 - 2³ = 73428829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73428847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12238137 + ... + 12238142.

It is an arithmetic number, because the mean of its divisors is an integer number (24476280).

Almost surely, 2^73428837 is an apocalyptic number.

It is an amenable number.

73428837 is a deficient number, since it is larger than the sum of its proper divisors (24476283).

73428837 is a wasteful number, since it uses less digits than its factorization.

73428837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24476282.

The product of its digits is 225792, while the sum is 42.

The square root of 73428837 is about 8569.0627842256. The cubic root of 73428837 is about 418.7507037339.

The spelling of 73428837 in words is "seventy-three million, four hundred twenty-eight thousand, eight hundred thirty-seven".