428701906 has 32 divisors (see below), whose sum is σ = 677160000. Its totient is φ = 203337792.

The previous prime is 428701901. The next prime is 428701913. The reversal of 428701906 is 609107824.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (428701901) 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, 650205 + ... + 650863.

It is an arithmetic number, because the mean of its divisors is an integer number (21161250).

Almost surely, 2^428701906 is an apocalyptic number.

428701906 is a deficient number, since it is larger than the sum of its proper divisors (248458094).

428701906 is a wasteful number, since it uses less digits than its factorization.

428701906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 428701906 is about 20705.1178697442. The cubic root of 428701906 is about 754.0239457951.

The spelling of 428701906 in words is "four hundred twenty-eight million, seven hundred one thousand, nine hundred six".