19927040 has 104 divisors (see below), whose sum is σ = 55043520. Its totient is φ = 6782976.

The previous prime is 19927027. The next prime is 19927049. The reversal of 19927040 is 4072991.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 19926988 and 19927006.

It is not an unprimeable number, because it can be changed into a prime (19927049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143291 + ... + 143429.

Almost surely, 2^19927040 is an apocalyptic number.

19927040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19927040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27521760).

19927040 is an abundant number, since it is smaller than the sum of its proper divisors (35116480).

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

19927040 is an equidigital number, since it uses as much as digits as its factorization.

19927040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 19927040 is about 4463.9713260728. The cubic root of 19927040 is about 271.1112862929. Note that the first 3 decimals are identical.

The spelling of 19927040 in words is "nineteen million, nine hundred twenty-seven thousand, forty".