19692340 has 12 divisors (see below), whose sum is σ = 41353956. Its totient is φ = 7876928.

The previous prime is 19692329. The next prime is 19692349. The reversal of 19692340 is 4329691.

It can be written as a sum of positive squares in 2 ways, for example, as 12574116 + 7118224 = 3546^2 + 2668^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19692296 and 19692305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19692349) by changing a digit.

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, 492289 + ... + 492328.

It is an arithmetic number, because the mean of its divisors is an integer number (3446163).

Almost surely, 2^19692340 is an apocalyptic number.

19692340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19692340 is an abundant number, since it is smaller than the sum of its proper divisors (21661616).

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

19692340 is a wasteful number, since it uses less digits than its factorization.

19692340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984626 (or 984624 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 19692340 is about 4437.6052100204. The cubic root of 19692340 is about 270.0427001511.

The spelling of 19692340 in words is "nineteen million, six hundred ninety-two thousand, three hundred forty".