428007826 has 8 divisors (see below), whose sum is σ = 642137904. Its totient is φ = 213961860.

The previous prime is 428007821. The next prime is 428007857. The reversal of 428007826 is 628700824.

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

It is not an unprimeable number, because it can be changed into a prime (428007821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6220 + ... + 29911.

It is an arithmetic number, because the mean of its divisors is an integer number (80267238).

Almost surely, 2^428007826 is an apocalyptic number.

428007826 is a deficient number, since it is larger than the sum of its proper divisors (214130078).

428007826 is a wasteful number, since it uses less digits than its factorization.

428007826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42056.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 428007826 is about 20688.3500067067. The cubic root of 428007826 is about 753.6167975894.

The spelling of 428007826 in words is "four hundred twenty-eight million, seven thousand, eight hundred twenty-six".