19494000 has 240 divisors, whose sum is σ = 73700640. Its totient is φ = 4924800.

The previous prime is 19493989. The next prime is 19494001. The reversal of 19494000 is 49491.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (240).

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 (19494001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1025991 + ... + 1026009.

It is an arithmetic number, because the mean of its divisors is an integer number (307086).

Almost surely, 2^19494000 is an apocalyptic number.

19494000 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 19494000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36850320).

19494000 is an abundant number, since it is smaller than the sum of its proper divisors (54206640).

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

19494000 is a wasteful number, since it uses less digits than its factorization.

19494000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 19494000 is about 4415.2010146765. The cubic root of 19494000 is about 269.1330215539.

The spelling of 19494000 in words is "nineteen million, four hundred ninety-four thousand".