428330373 has 4 divisors (see below), whose sum is σ = 571107168. Its totient is φ = 285553580.

The previous prime is 428330339. The next prime is 428330393. The reversal of 428330373 is 373033824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428330373 - 2¹⁴ = 428313989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428330323) 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, 71388393 + ... + 71388398.

It is an arithmetic number, because the mean of its divisors is an integer number (142776792).

Almost surely, 2^428330373 is an apocalyptic number.

It is an amenable number.

428330373 is a deficient number, since it is larger than the sum of its proper divisors (142776795).

428330373 is a wasteful number, since it uses less digits than its factorization.

428330373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142776794.

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 428330373 is about 20696.1439161985. The cubic root of 428330373 is about 753.8060587719.

The spelling of 428330373 in words is "four hundred twenty-eight million, three hundred thirty thousand, three hundred seventy-three".