19630940 has 24 divisors (see below), whose sum is σ = 47114592. Its totient is φ = 6730560.

The previous prime is 19630939. The next prime is 19630943. The reversal of 19630940 is 4903691.

It is a junction number, because it is equal to n+sod(n) for n = 19630897 and 19630906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19630943) 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 7 ways as a sum of consecutive naturals, for example, 69971 + ... + 70250.

It is an arithmetic number, because the mean of its divisors is an integer number (1963108).

Almost surely, 2^19630940 is an apocalyptic number.

19630940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19630940 is an abundant number, since it is smaller than the sum of its proper divisors (27483652).

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

19630940 is a wasteful number, since it uses less digits than its factorization.

19630940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140237 (or 140235 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 19630940 is about 4430.6816631304. The cubic root of 19630940 is about 269.7617468414.

The spelling of 19630940 in words is "nineteen million, six hundred thirty thousand, nine hundred forty".