73228511 has 4 divisors (see below), whose sum is σ = 73247592. Its totient is φ = 73209432.

The previous prime is 73228483. The next prime is 73228523. The reversal of 73228511 is 11582237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73228511 - 2⁶ = 73228447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73218511) 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, 1556 + ... + 12201.

It is an arithmetic number, because the mean of its divisors is an integer number (18311898).

Almost surely, 2^73228511 is an apocalyptic number.

73228511 is a deficient number, since it is larger than the sum of its proper divisors (19081).

73228511 is a wasteful number, since it uses less digits than its factorization.

73228511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19080.

The product of its digits is 3360, while the sum is 29.

The square root of 73228511 is about 8557.3658914411. The cubic root of 73228511 is about 418.3695498699.

The spelling of 73228511 in words is "seventy-three million, two hundred twenty-eight thousand, five hundred eleven".