1028372890 has 16 divisors (see below), whose sum is σ = 1857663720. Its totient is φ = 409884160.

The previous prime is 1028372887. The next prime is 1028372923. The reversal of 1028372890 is 982738201.

It can be written as a sum of positive squares in 4 ways, for example, as 940219569 + 88153321 = 30663^2 + 9389^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180175 + ... + 185794.

Almost surely, 2^1028372890 is an apocalyptic number.

1028372890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028372890 is a deficient number, since it is larger than the sum of its proper divisors (829290830).

1028372890 is a wasteful number, since it uses less digits than its factorization.

1028372890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366257.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1028372890 is about 32068.2536163103. The cubic root of 1028372890 is about 1009.3695670326.

The spelling of 1028372890 in words is "one billion, twenty-eight million, three hundred seventy-two thousand, eight hundred ninety".