19949630 has 16 divisors (see below), whose sum is σ = 36015840. Its totient is φ = 7956192.

The previous prime is 19949627. The next prime is 19949669. The reversal of 19949630 is 3694991.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (2250990).

Almost surely, 2^19949630 is an apocalyptic number.

19949630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19949630 is a deficient number, since it is larger than the sum of its proper divisors (16066210).

19949630 is a wasteful number, since it uses less digits than its factorization.

19949630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5923.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 19949630 is about 4466.5008675696. The cubic root of 19949630 is about 271.2136947311.

The spelling of 19949630 in words is "nineteen million, nine hundred forty-nine thousand, six hundred thirty".