428215622 has 8 divisors (see below), whose sum is σ = 642898776. Its totient is φ = 213916032.

The previous prime is 428215553. The next prime is 428215639. The reversal of 428215622 is 226512824.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93083 + ... + 97574.

It is an arithmetic number, because the mean of its divisors is an integer number (80362347).

Almost surely, 2^428215622 is an apocalyptic number.

428215622 is a deficient number, since it is larger than the sum of its proper divisors (214683154).

428215622 is a wasteful number, since it uses less digits than its factorization.

428215622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191782.

The product of its digits is 15360, while the sum is 32.

The square root of 428215622 is about 20693.3714507810. The cubic root of 428215622 is about 753.7387371200.

The spelling of 428215622 in words is "four hundred twenty-eight million, two hundred fifteen thousand, six hundred twenty-two".