19790834 has 24 divisors (see below), whose sum is σ = 35080704. Its totient is φ = 8202600.

The previous prime is 19790831. The next prime is 19790861. The reversal of 19790834 is 43809791.

Added to its reverse (43809791) it gives a square (63600625 = 7975²).

It is a happy number.

It is a super-2 number, since 2×19790834² = 783354220831112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19790791 and 19790800.

It is not an unprimeable number, because it can be changed into a prime (19790831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12719 + ... + 14189.

It is an arithmetic number, because the mean of its divisors is an integer number (1461696).

Almost surely, 2^19790834 is an apocalyptic number.

19790834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19790834 is a deficient number, since it is larger than the sum of its proper divisors (15289870).

19790834 is a wasteful number, since it uses less digits than its factorization.

19790834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 19790834 is about 4448.6890203744. The cubic root of 19790834 is about 270.4921704302.

Adding to 19790834 its reverse (43809791), we get a square (63600625 = 7975²).

The spelling of 19790834 in words is "nineteen million, seven hundred ninety thousand, eight hundred thirty-four".