428418373 has 4 divisors (see below), whose sum is σ = 428843980. Its totient is φ = 427992768.

The previous prime is 428418349. The next prime is 428418383. The reversal of 428418373 is 373814824.

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 74338884 + 354079489 = 8622^2 + 18817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428418373 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 (428418323) 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, 211290 + ... + 213307.

It is an arithmetic number, because the mean of its divisors is an integer number (107210995).

Almost surely, 2^428418373 is an apocalyptic number.

It is an amenable number.

428418373 is a deficient number, since it is larger than the sum of its proper divisors (425607).

428418373 is a wasteful number, since it uses less digits than its factorization.

428418373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425606.

The product of its digits is 129024, while the sum is 40.

The square root of 428418373 is about 20698.2698069186. The cubic root of 428418373 is about 753.8576781098.

The spelling of 428418373 in words is "four hundred twenty-eight million, four hundred eighteen thousand, three hundred seventy-three".