428324415 has 16 divisors (see below), whose sum is σ = 685584000. Its totient is φ = 228351392.

The previous prime is 428324389. The next prime is 428324441. The reversal of 428324415 is 514423824.

It is a Cunningham number, because it is equal to 20696²-1.

It is an interprime number because it is at equal distance from previous prime (428324389) and next prime (428324441).

It is a cyclic number.

It is not a de Polignac number, because 428324415 - 2¹⁴ = 428308031 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58636 + ... + 65534.

It is an arithmetic number, because the mean of its divisors is an integer number (42849000).

Almost surely, 2^428324415 is an apocalyptic number.

428324415 is a deficient number, since it is larger than the sum of its proper divisors (257259585).

428324415 is a wasteful number, since it uses less digits than its factorization.

428324415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11046.

The product of its digits is 30720, while the sum is 33.

The square root of 428324415 is about 20695.9999758407. Note that the first 4 decimals coincide. The cubic root of 428324415 is about 753.8025636525.

The spelling of 428324415 in words is "four hundred twenty-eight million, three hundred twenty-four thousand, four hundred fifteen".