19297420 has 12 divisors (see below), whose sum is σ = 40524624. Its totient is φ = 7718960.

The previous prime is 19297403. The next prime is 19297423. The reversal of 19297420 is 2479291.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19297423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482416 + ... + 482455.

It is an arithmetic number, because the mean of its divisors is an integer number (3377052).

Almost surely, 2^19297420 is an apocalyptic number.

19297420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19297420 is an abundant number, since it is smaller than the sum of its proper divisors (21227204).

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

19297420 is a wasteful number, since it uses less digits than its factorization.

19297420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964880 (or 964878 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 19297420 is about 4392.8828802963. The cubic root of 19297420 is about 268.2253061892.

The spelling of 19297420 in words is "nineteen million, two hundred ninety-seven thousand, four hundred twenty".