19140380 has 36 divisors (see below), whose sum is σ = 46759608. Its totient is φ = 6562080.

The previous prime is 19140379. The next prime is 19140383. The reversal of 19140380 is 8304191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8786 + ... + 10745.

It is an arithmetic number, because the mean of its divisors is an integer number (1298878).

Almost surely, 2^19140380 is an apocalyptic number.

19140380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19140380 is an abundant number, since it is smaller than the sum of its proper divisors (27619228).

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

19140380 is a wasteful number, since it uses less digits than its factorization.

19140380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19554 (or 19545 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 19140380 is about 4374.9719999104. The cubic root of 19140380 is about 267.4957288164.

The spelling of 19140380 in words is "nineteen million, one hundred forty thousand, three hundred eighty".