428170994 has 16 divisors (see below), whose sum is σ = 662670720. Its totient is φ = 207383280.

The previous prime is 428170991. The next prime is 428171041. The reversal of 428170994 is 499071824.

It is not an unprimeable number, because it can be changed into a prime (428170991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17192 + ... + 33939.

It is an arithmetic number, because the mean of its divisors is an integer number (41416920).

Almost surely, 2^428170994 is an apocalyptic number.

428170994 is a deficient number, since it is larger than the sum of its proper divisors (234499726).

428170994 is a wasteful number, since it uses less digits than its factorization.

428170994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51265.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 428170994 is about 20692.2931063718. The cubic root of 428170994 is about 753.7125516975.

The spelling of 428170994 in words is "four hundred twenty-eight million, one hundred seventy thousand, nine hundred ninety-four".