19478380 has 12 divisors (see below), whose sum is σ = 40904640. Its totient is φ = 7791344.

The previous prime is 19478377. The next prime is 19478419. The reversal of 19478380 is 8387491.

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 3 ways as a sum of consecutive naturals, for example, 486940 + ... + 486979.

It is an arithmetic number, because the mean of its divisors is an integer number (3408720).

Almost surely, 2^19478380 is an apocalyptic number.

19478380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19478380 is an abundant number, since it is smaller than the sum of its proper divisors (21426260).

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

19478380 is a wasteful number, since it uses less digits than its factorization.

19478380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973928 (or 973926 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 19478380 is about 4413.4317713090. The cubic root of 19478380 is about 269.0611194113.

The spelling of 19478380 in words is "nineteen million, four hundred seventy-eight thousand, three hundred eighty".