73430263 has 4 divisors (see below), whose sum is σ = 74359840. Its totient is φ = 72500688.

The previous prime is 73430249. The next prime is 73430267. The reversal of 73430263 is 36203437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36203437 = 877 ⋅41281.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73430263 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 (73430267) 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, 464670 + ... + 464827.

It is an arithmetic number, because the mean of its divisors is an integer number (18589960).

Almost surely, 2^73430263 is an apocalyptic number.

73430263 is a deficient number, since it is larger than the sum of its proper divisors (929577).

73430263 is an equidigital number, since it uses as much as digits as its factorization.

73430263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929576.

The product of its (nonzero) digits is 9072, while the sum is 28.

The square root of 73430263 is about 8569.1459901206. The cubic root of 73430263 is about 418.7534144520.

It can be divided in two parts, 73 and 430263, that added together give a square (430336 = 656²).

The spelling of 73430263 in words is "seventy-three million, four hundred thirty thousand, two hundred sixty-three".