19806048 has 36 divisors (see below), whose sum is σ = 56324268. Its totient is φ = 6601920.

The previous prime is 19806001. The next prime is 19806049. The reversal of 19806048 is 84060891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19806049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34098 + ... + 34673.

It is an arithmetic number, because the mean of its divisors is an integer number (1564563).

Almost surely, 2^19806048 is an apocalyptic number.

19806048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19806048 is an abundant number, since it is smaller than the sum of its proper divisors (36518220).

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

19806048 is a wasteful number, since it uses less digits than its factorization.

19806048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68787 (or 68776 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 19806048 is about 4450.3986338305. The cubic root of 19806048 is about 270.5614653675.

The spelling of 19806048 in words is "nineteen million, eight hundred six thousand, forty-eight".