428707005 has 16 divisors (see below), whose sum is σ = 715754880. Its totient is φ = 218702528.

The previous prime is 428707001. The next prime is 428707021. The reversal of 428707005 is 500707824.

It is a cyclic number.

It is not a de Polignac number, because 428707005 - 2² = 428707001 is a prime.

It is a super-2 number, since 2×428707005² = 367579392272140050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428707001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 620970 + ... + 621659.

It is an arithmetic number, because the mean of its divisors is an integer number (44734680).

Almost surely, 2^428707005 is an apocalyptic number.

It is an amenable number.

428707005 is a deficient number, since it is larger than the sum of its proper divisors (287047875).

428707005 is a wasteful number, since it uses less digits than its factorization.

428707005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242660.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 428707005 is about 20705.2410031856. The cubic root of 428707005 is about 754.0269352483.

The spelling of 428707005 in words is "four hundred twenty-eight million, seven hundred seven thousand, five".