73466728 has 8 divisors (see below), whose sum is σ = 137750130. Its totient is φ = 36733360.

The previous prime is 73466641. The next prime is 73466759. The reversal of 73466728 is 82766437.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63968004 + 9498724 = 7998^2 + 3082^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4591663 + ... + 4591678.

Almost surely, 2^73466728 is an apocalyptic number.

It is an amenable number.

73466728 is a deficient number, since it is larger than the sum of its proper divisors (64283402).

73466728 is a wasteful number, since it uses less digits than its factorization.

73466728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183347 (or 9183343 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 73466728 is about 8571.2734176434. The cubic root of 73466728 is about 418.8227197388.

The spelling of 73466728 in words is "seventy-three million, four hundred sixty-six thousand, seven hundred twenty-eight".