19104390 has 64 divisors (see below), whose sum is σ = 51364800. Its totient is φ = 5052672.

The previous prime is 19104389. The next prime is 19104391. The reversal of 19104390 is 9340191.

19104390 is nontrivially palindromic in base 12.

It is an interprime number because it is at equal distance from previous prime (19104389) and next prime (19104391).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19104391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46506 + ... + 46914.

It is an arithmetic number, because the mean of its divisors is an integer number (802575).

Almost surely, 2^19104390 is an apocalyptic number.

19104390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19104390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25682400).

19104390 is an abundant number, since it is smaller than the sum of its proper divisors (32260410).

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

19104390 is a wasteful number, since it uses less digits than its factorization.

19104390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19104390 is about 4370.8568953925. The cubic root of 19104390 is about 267.3279646160.

The spelling of 19104390 in words is "nineteen million, one hundred four thousand, three hundred ninety".