19782054 has 24 divisors (see below), whose sum is σ = 43380792. Its totient is φ = 6514080.

The previous prime is 19782043. The next prime is 19782079. The reversal of 19782054 is 45028791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5127 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (1807533).

Almost surely, 2^19782054 is an apocalyptic number.

19782054 is an abundant number, since it is smaller than the sum of its proper divisors (23598738).

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

19782054 is a wasteful number, since it uses less digits than its factorization.

19782054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13332 (or 13329 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 19782054 is about 4447.7021033338. The cubic root of 19782054 is about 270.4521641568.

The spelling of 19782054 in words is "nineteen million, seven hundred eighty-two thousand, fifty-four".