428343026 has 8 divisors (see below), whose sum is σ = 643669740. Its totient is φ = 213786448.

The previous prime is 428343023. The next prime is 428343029. The reversal of 428343026 is 620343824.

It is an interprime number because it is at equal distance from previous prime (428343023) and next prime (428343029).

It can be written as a sum of positive squares in 2 ways, for example, as 315027001 + 113316025 = 17749^2 + 10645^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 428342983 and 428343001.

It is not an unprimeable number, because it can be changed into a prime (428343023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191141 + ... + 193368.

Almost surely, 2^428343026 is an apocalyptic number.

428343026 is a deficient number, since it is larger than the sum of its proper divisors (215326714).

428343026 is a wasteful number, since it uses less digits than its factorization.

428343026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385068.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 428343026 is about 20696.4495989046. The cubic root of 428343026 is about 753.8134812466.

The spelling of 428343026 in words is "four hundred twenty-eight million, three hundred forty-three thousand, twenty-six".