19245980 has 48 divisors (see below), whose sum is σ = 44123520. Its totient is φ = 7008768.

The previous prime is 19245979. The next prime is 19245991. The reversal of 19245980 is 8954291.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20072 + ... + 21008.

It is an arithmetic number, because the mean of its divisors is an integer number (919240).

Almost surely, 2^19245980 is an apocalyptic number.

19245980 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 19245980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22061760).

19245980 is an abundant number, since it is smaller than the sum of its proper divisors (24877540).

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

19245980 is a wasteful number, since it uses less digits than its factorization.

19245980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 19245980 is about 4387.0240482587. The cubic root of 19245980 is about 267.9867632877.

The spelling of 19245980 in words is "nineteen million, two hundred forty-five thousand, nine hundred eighty".