19796670 has 128 divisors (see below), whose sum is σ = 59097600. Its totient is φ = 4686336.

The previous prime is 19796659. The next prime is 19796671. The reversal of 19796670 is 7669791.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19796671) 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 63 ways as a sum of consecutive naturals, for example, 87097 + ... + 87323.

It is an arithmetic number, because the mean of its divisors is an integer number (461700).

Almost surely, 2^19796670 is an apocalyptic number.

19796670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19796670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29548800).

19796670 is an abundant number, since it is smaller than the sum of its proper divisors (39300930).

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

19796670 is a wasteful number, since it uses less digits than its factorization.

19796670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 19796670 is about 4449.3448955998. The cubic root of 19796670 is about 270.5187557535.

It can be divided in two parts, 1979 and 6670, that added together give a square (8649 = 93²).

The spelling of 19796670 in words is "nineteen million, seven hundred ninety-six thousand, six hundred seventy".