428202626 has 4 divisors (see below), whose sum is σ = 642303942. Its totient is φ = 214101312.

The previous prime is 428202623. The next prime is 428202631. The reversal of 428202626 is 626202824.

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

It can be written as a sum of positive squares in only one way, i.e., 425803225 + 2399401 = 20635^2 + 1549^2 .

It is a junction number, because it is equal to n+sod(n) for n = 428202592 and 428202601.

It is not an unprimeable number, because it can be changed into a prime (428202623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107050655 + ... + 107050658.

Almost surely, 2^428202626 is an apocalyptic number.

428202626 is a deficient number, since it is larger than the sum of its proper divisors (214101316).

428202626 is a wasteful number, since it uses less digits than its factorization.

428202626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214101315.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 428202626 is about 20693.0574348017. The cubic root of 428202626 is about 753.7311119212.

The spelling of 428202626 in words is "four hundred twenty-eight million, two hundred two thousand, six hundred twenty-six".