428267515 has 8 divisors (see below), whose sum is σ = 553453488. Its totient is φ = 316259040.

The previous prime is 428267501. The next prime is 428267537. The reversal of 428267515 is 515762824.

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

It is not a de Polignac number, because 428267515 - 2¹³ = 428259323 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3294301 + ... + 3294430.

It is an arithmetic number, because the mean of its divisors is an integer number (69181686).

Almost surely, 2^428267515 is an apocalyptic number.

428267515 is a deficient number, since it is larger than the sum of its proper divisors (125185973).

428267515 is a wasteful number, since it uses less digits than its factorization.

428267515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588749.

The product of its digits is 134400, while the sum is 40.

The square root of 428267515 is about 20694.6252684121. The cubic root of 428267515 is about 753.7691829845.

The spelling of 428267515 in words is "four hundred twenty-eight million, two hundred sixty-seven thousand, five hundred fifteen".