19028640528 has 50 divisors (see below), whose sum is σ = 55074410094. Its totient is φ = 6342879744.

The previous prime is 19028640479. The next prime is 19028640539. The reversal of 19028640528 is 82504682091.

19028640528 is a `hidden beast` number, since 1 + 9 + 0 + 2 + 86 + 40 + 528 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13672157184 + 5356483344 = 116928^2 + 73188^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7340001 + ... + 7342592.

Almost surely, 2^19028640528 is an apocalyptic number.

19028640528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19028640528 is an abundant number, since it is smaller than the sum of its proper divisors (36045769566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19028640528 is a wasteful number, since it uses less digits than its factorization.

19028640528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14682613 (or 14682598 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 19028640528 in words is "nineteen billion, twenty-eight million, six hundred forty thousand, five hundred twenty-eight".