19952445 has 16 divisors (see below), whose sum is σ = 32703552. Its totient is φ = 10381440.

The previous prime is 19952423. The next prime is 19952447. The reversal of 19952445 is 54425991.

It is not a de Polignac number, because 19952445 - 2⁶ = 19952381 is a prime.

It is a super-2 number, since 2×19952445² = 796200122956050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19952447) 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 15 ways as a sum of consecutive naturals, for example, 15607 + ... + 16836.

It is an arithmetic number, because the mean of its divisors is an integer number (2043972).

Almost surely, 2^19952445 is an apocalyptic number.

19952445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19952445 is a deficient number, since it is larger than the sum of its proper divisors (12751107).

19952445 is a wasteful number, since it uses less digits than its factorization.

19952445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32492.

The product of its digits is 64800, while the sum is 39.

The square root of 19952445 is about 4466.8159800914. The cubic root of 19952445 is about 271.2264507011.

The spelling of 19952445 in words is "nineteen million, nine hundred fifty-two thousand, four hundred forty-five".