428067026 has 4 divisors (see below), whose sum is σ = 642100542. Its totient is φ = 214033512.

The previous prime is 428067011. The next prime is 428067037. The reversal of 428067026 is 620760824.

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., 284091025 + 143976001 = 16855^2 + 11999^2 .

It is an unprimeable number.

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, 107016755 + ... + 107016758.

Almost surely, 2^428067026 is an apocalyptic number.

428067026 is a deficient number, since it is larger than the sum of its proper divisors (214033516).

428067026 is a wasteful number, since it uses less digits than its factorization.

428067026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214033515.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 428067026 is about 20689.7807141593. The cubic root of 428067026 is about 753.6515415472.

The spelling of 428067026 in words is "four hundred twenty-eight million, sixty-seven thousand, twenty-six".