19342240 has 24 divisors (see below), whose sum is σ = 45696420. Its totient is φ = 7736832.
The previous prime is 19342223. The next prime is 19342249. The reversal of 19342240 is 4224391.
It can be written as a sum of positive squares in 2 ways, for example, as 19324816 + 17424 = 4396^2 + 132^2 .
It is not an unprimeable number, because it can be changed into a prime (19342249) 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, 60285 + ... + 60604.
Almost surely, 219342240 is an apocalyptic number.
19342240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
19342240 is an abundant number, since it is smaller than the sum of its proper divisors (26354180).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
19342240 is a wasteful number, since it uses less digits than its factorization.
19342240 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 120904 (or 120896 counting only the distinct ones).
The product of its (nonzero) digits is 1728, while the sum is 25.
The square root of 19342240 is about 4397.9813551219. The cubic root of 19342240 is about 268.4328047898.
The spelling of 19342240 in words is "nineteen million, three hundred forty-two thousand, two hundred forty".
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