19941888 has 40 divisors (see below), whose sum is σ = 53130528. Its totient is φ = 6646784.

The previous prime is 19941881. The next prime is 19941899. The reversal of 19941888 is 88814991.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19941881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4956 + ... + 8027.

Almost surely, 2^19941888 is an apocalyptic number.

It is an amenable number.

19941888 is an abundant number, since it is smaller than the sum of its proper divisors (33188640).

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

19941888 is an equidigital number, since it uses as much as digits as its factorization.

19941888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13004 (or 12988 counting only the distinct ones).

The product of its digits is 165888, while the sum is 48.

The square root of 19941888 is about 4465.6341095079. The cubic root of 19941888 is about 271.1786062256.

The spelling of 19941888 in words is "nineteen million, nine hundred forty-one thousand, eight hundred eighty-eight".