428040886 has 32 divisors (see below), whose sum is σ = 791461440. Its totient is φ = 169070976.

The previous prime is 428040871. The next prime is 428040889. The reversal of 428040886 is 688040824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428040889) 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, 149460 + ... + 152296.

It is an arithmetic number, because the mean of its divisors is an integer number (24733170).

Almost surely, 2^428040886 is an apocalyptic number.

428040886 is a deficient number, since it is larger than the sum of its proper divisors (363420554).

428040886 is a wasteful number, since it uses less digits than its factorization.

428040886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688.

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 428040886 is about 20689.1489916816. The cubic root of 428040886 is about 753.6362006068.

The spelling of 428040886 in words is "four hundred twenty-eight million, forty thousand, eight hundred eighty-six".