199142828 has 12 divisors (see below), whose sum is σ = 369000072. Its totient is φ = 93714240.

The previous prime is 199142803. The next prime is 199142833. The reversal of 199142828 is 828241991.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 1464218 + ... + 1464353.

It is an arithmetic number, because the mean of its divisors is an integer number (30750006).

Almost surely, 2^199142828 is an apocalyptic number.

It is an amenable number.

199142828 is a deficient number, since it is larger than the sum of its proper divisors (169857244).

199142828 is a wasteful number, since it uses less digits than its factorization.

199142828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928592 (or 2928590 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 199142828 is about 14111.7974758710. The cubic root of 199142828 is about 583.9668891905.

The spelling of 199142828 in words is "one hundred ninety-nine million, one hundred forty-two thousand, eight hundred twenty-eight".