428019670 has 32 divisors (see below), whose sum is σ = 830618208.
Its totient is φ = 157863168.
The previous prime is 428019661. The next prime is 428019703. The reversal of 428019670 is 76910824.
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, 214417 + ... + 216403.
It is an arithmetic number, because the mean of its divisors is an integer number (25956819).
Almost surely, 2428019670 is an apocalyptic number.
428019670 is a deficient number, since it is larger than the sum of its proper divisors (402598538).
428019670 is a wasteful number, since it uses less digits than its factorization.
428019670 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3664.
The product of its (nonzero) digits is 24192, while the sum is 37.
The square root of 428019670 is about 20688.6362527838.
The cubic root of 428019670 is about 753.6237489849.
The spelling of 428019670 in words is "four hundred twenty-eight million, nineteen thousand, six hundred seventy".