19089850 has 48 divisors (see below), whose sum is σ = 39184992. Its totient is φ = 6874560.

The previous prime is 19089809. The next prime is 19089853. The reversal of 19089850 is 5898091.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19089853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27609 + ... + 28291.

It is an arithmetic number, because the mean of its divisors is an integer number (816354).

Almost surely, 2^19089850 is an apocalyptic number.

19089850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19089850 is an abundant number, since it is smaller than the sum of its proper divisors (20095142).

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

19089850 is a wasteful number, since it uses less digits than its factorization.

19089850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 19089850 is about 4369.1932893842. The cubic root of 19089850 is about 267.2601279370.

The spelling of 19089850 in words is "nineteen million, eighty-nine thousand, eight hundred fifty".