2028890642 has 16 divisors (see below), whose sum is σ = 3271674240. Its totient is φ = 940604688.

The previous prime is 2028890641. The next prime is 2028890681. The reversal of 2028890642 is 2460988202.

It is a self number, because there is not a number n which added to its sum of digits gives 2028890642.

It is not an unprimeable number, because it can be changed into a prime (2028890641) 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, 566213 + ... + 569784.

It is an arithmetic number, because the mean of its divisors is an integer number (204479640).

Almost surely, 2^2028890642 is an apocalyptic number.

2028890642 is a deficient number, since it is larger than the sum of its proper divisors (1242783598).

2028890642 is a wasteful number, since it uses less digits than its factorization.

2028890642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136065.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 2028890642 is about 45043.2086112879. The cubic root of 2028890642 is about 1265.9587251646.

The spelling of 2028890642 in words is "two billion, twenty-eight million, eight hundred ninety thousand, six hundred forty-two".