19427380 has 48 divisors (see below), whose sum is σ = 46932480. Its totient is φ = 6617088.

The previous prime is 19427377. The next prime is 19427389. The reversal of 19427380 is 8372491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19427389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26661 + ... + 27379.

It is an arithmetic number, because the mean of its divisors is an integer number (977760).

Almost surely, 2^19427380 is an apocalyptic number.

19427380 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 19427380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23466240).

19427380 is an abundant number, since it is smaller than the sum of its proper divisors (27505100).

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

19427380 is a wasteful number, since it uses less digits than its factorization.

19427380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 19427380 is about 4407.6501676063. The cubic root of 19427380 is about 268.8260877045.

The spelling of 19427380 in words is "nineteen million, four hundred twenty-seven thousand, three hundred eighty".