19228496647920 has 320 divisors, whose sum is σ = 69806708084736. Its totient is φ = 4286576885760.

The previous prime is 19228496647891. The next prime is 19228496647931. The reversal of 19228496647920 is 2974669482291.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234633192 + ... + 234715128.

Almost surely, 2^{19228496647920} is an apocalyptic number.

19228496647920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19228496647920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34903354042368).

19228496647920 is an abundant number, since it is smaller than the sum of its proper divisors (50578211436816).

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

19228496647920 is a wasteful number, since it uses less digits than its factorization.

19228496647920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85408 (or 85402 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 69.

The spelling of 19228496647920 in words is "nineteen trillion, two hundred twenty-eight billion, four hundred ninety-six million, six hundred forty-seven thousand, nine hundred twenty".