19740736 has 28 divisors (see below), whose sum is σ = 39428928. Its totient is φ = 9805952.

The previous prime is 19740731. The next prime is 19740737. The reversal of 19740736 is 63704791.

It is a junction number, because it is equal to n+sod(n) for n = 19740695 and 19740704.

It is not an unprimeable number, because it can be changed into a prime (19740731) 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, 9765 + ... + 11611.

It is an arithmetic number, because the mean of its divisors is an integer number (1408176).

Almost surely, 2^19740736 is an apocalyptic number.

19740736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19740736 is a deficient number, since it is larger than the sum of its proper divisors (19688192).

19740736 is a wasteful number, since it uses less digits than its factorization.

19740736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026 (or 2016 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 19740736 is about 4443.0548049737. The cubic root of 19740736 is about 270.2637386357.

The spelling of 19740736 in words is "nineteen million, seven hundred forty thousand, seven hundred thirty-six".