732856321 has 4 divisors (see below), whose sum is σ = 733471812. Its totient is φ = 732240832.

The previous prime is 732856307. The next prime is 732856331. The reversal of 732856321 is 123658237.

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

It can be written as a sum of positive squares in 2 ways, for example, as 155127025 + 577729296 = 12455^2 + 24036^2 .

It is a cyclic number.

It is not a de Polignac number, because 732856321 - 2⁷ = 732856193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (732856301) 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 3 ways as a sum of consecutive naturals, for example, 305956 + ... + 308341.

It is an arithmetic number, because the mean of its divisors is an integer number (183367953).

It is a Proth number, since it is equal to 22365 ⋅ 2¹⁵ + 1 and 22365 < 2¹⁵.

Almost surely, 2^732856321 is an apocalyptic number.

It is an amenable number.

732856321 is a deficient number, since it is larger than the sum of its proper divisors (615491).

732856321 is a wasteful number, since it uses less digits than its factorization.

732856321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615490.

The product of its digits is 60480, while the sum is 37.

The square root of 732856321 is about 27071.3191588441. The cubic root of 732856321 is about 901.5841732884.

The spelling of 732856321 in words is "seven hundred thirty-two million, eight hundred fifty-six thousand, three hundred twenty-one".