19750030 has 16 divisors (see below), whose sum is σ = 35601120. Its totient is φ = 7888672.

The previous prime is 19750021. The next prime is 19750033. The reversal of 19750030 is 3005791.

It is a junction number, because it is equal to n+sod(n) for n = 19749977 and 19750004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19750033) 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, 11487 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (2225070).

Almost surely, 2^19750030 is an apocalyptic number.

19750030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19750030 is a deficient number, since it is larger than the sum of its proper divisors (15851090).

19750030 is a wasteful number, since it uses less digits than its factorization.

19750030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 19750030 is about 4444.1005839202. The cubic root of 19750030 is about 270.3061456512.

The spelling of 19750030 in words is "nineteen million, seven hundred fifty thousand, thirty".