19964330 has 16 divisors (see below), whose sum is σ = 36077184. Its totient is φ = 7954320.

The previous prime is 19964323. The next prime is 19964333. The reversal of 19964330 is 3346991.

It is not an unprimeable number, because it can be changed into a prime (19964333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166 + ... + 6425.

It is an arithmetic number, because the mean of its divisors is an integer number (2254824).

Almost surely, 2^19964330 is an apocalyptic number.

19964330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19964330 is a deficient number, since it is larger than the sum of its proper divisors (16112854).

19964330 is a wasteful number, since it uses less digits than its factorization.

19964330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7861.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 19964330 is about 4468.1461480126. The cubic root of 19964330 is about 271.2802935013.

The spelling of 19964330 in words is "nineteen million, nine hundred sixty-four thousand, three hundred thirty".