19796040 has 96 divisors (see below), whose sum is σ = 70200000. Its totient is φ = 4798080.

The previous prime is 19796033. The next prime is 19796047. The reversal of 19796040 is 4069791.

It is an interprime number because it is at equal distance from previous prime (19796033) and next prime (19796047).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 19795986 and 19796004.

It is not an unprimeable number, because it can be changed into a prime (19796047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1461 + ... + 6459.

It is an arithmetic number, because the mean of its divisors is an integer number (731250).

Almost surely, 2^19796040 is an apocalyptic number.

19796040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19796040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35100000).

19796040 is an abundant number, since it is smaller than the sum of its proper divisors (50403960).

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

19796040 is a wasteful number, since it uses less digits than its factorization.

19796040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027 (or 5020 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 19796040 is about 4449.2740980974. The cubic root of 19796040 is about 270.5158861022.

The spelling of 19796040 in words is "nineteen million, seven hundred ninety-six thousand, forty".