19280328 has 16 divisors (see below), whose sum is σ = 48200880. Its totient is φ = 6426768.

The previous prime is 19280323. The next prime is 19280333. The reversal of 19280328 is 82308291.

It is an interprime number because it is at equal distance from previous prime (19280323) and next prime (19280333).

It is not an unprimeable number, because it can be changed into a prime (19280323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401650 + ... + 401697.

It is an arithmetic number, because the mean of its divisors is an integer number (3012555).

Almost surely, 2^19280328 is an apocalyptic number.

It is an amenable number.

19280328 is an abundant number, since it is smaller than the sum of its proper divisors (28920552).

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

19280328 is a wasteful number, since it uses less digits than its factorization.

19280328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803356 (or 803352 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 19280328 is about 4390.9370298377. The cubic root of 19280328 is about 268.1460924719.

The spelling of 19280328 in words is "nineteen million, two hundred eighty thousand, three hundred twenty-eight".