73728669 has 8 divisors (see below), whose sum is σ = 112348480. Its totient is φ = 42130656.

The previous prime is 73728667. The next prime is 73728673. The reversal of 73728669 is 96682737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73728669 - 2¹ = 73728667 is a prime.

It is a super-2 number, since 2×73728669² = 10871833265023122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73728661) 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, 1755424 + ... + 1755465.

It is an arithmetic number, because the mean of its divisors is an integer number (14043560).

Almost surely, 2^73728669 is an apocalyptic number.

It is an amenable number.

73728669 is a deficient number, since it is larger than the sum of its proper divisors (38619811).

73728669 is a wasteful number, since it uses less digits than its factorization.

73728669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510899.

The product of its digits is 762048, while the sum is 48.

The square root of 73728669 is about 8586.5399900076. The cubic root of 73728669 is about 419.3198913537.

The spelling of 73728669 in words is "seventy-three million, seven hundred twenty-eight thousand, six hundred sixty-nine".