19280097 has 12 divisors (see below), whose sum is σ = 27912144. Its totient is φ = 12824280.

The previous prime is 19280089. The next prime is 19280101. The reversal of 19280097 is 79008291.

It is a happy number.

It is not a de Polignac number, because 19280097 - 2³ = 19280089 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19280017) 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, 2238 + ... + 6600.

It is an arithmetic number, because the mean of its divisors is an integer number (2326012).

Almost surely, 2^19280097 is an apocalyptic number.

It is an amenable number.

19280097 is a deficient number, since it is larger than the sum of its proper divisors (8632047).

19280097 is a wasteful number, since it uses less digits than its factorization.

19280097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860 (or 4857 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 19280097 is about 4390.9107255785. The cubic root of 19280097 is about 268.1450215704.

The spelling of 19280097 in words is "nineteen million, two hundred eighty thousand, ninety-seven".