19944534 has 8 divisors (see below), whose sum is σ = 39889080. Its totient is φ = 6648176.

The previous prime is 19944527. The next prime is 19944541. The reversal of 19944534 is 43544991.

It is an interprime number because it is at equal distance from previous prime (19944527) and next prime (19944541).

It is a sphenic number, since it is the product of 3 distinct primes.

19944534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 19944492 and 19944501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662039 + ... + 1662050.

It is an arithmetic number, because the mean of its divisors is an integer number (4986135).

Almost surely, 2^19944534 is an apocalyptic number.

19944534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19944534 is a wasteful number, since it uses less digits than its factorization.

19944534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324094.

The product of its digits is 77760, while the sum is 39.

The square root of 19944534 is about 4465.9303621978. The cubic root of 19944534 is about 271.1905995210.

The spelling of 19944534 in words is "nineteen million, nine hundred forty-four thousand, five hundred thirty-four".