19274040 has 96 divisors (see below), whose sum is σ = 64378080. Its totient is φ = 4997376.

The previous prime is 19273981. The next prime is 19274051. The reversal of 19274040 is 4047291.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19273995 and 19274013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12597 + ... + 14043.

It is an arithmetic number, because the mean of its divisors is an integer number (670605).

Almost surely, 2^19274040 is an apocalyptic number.

19274040 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 19274040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32189040).

19274040 is an abundant number, since it is smaller than the sum of its proper divisors (45104040).

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

19274040 is a wasteful number, since it uses less digits than its factorization.

19274040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 19274040 is about 4390.2209511595. The cubic root of 19274040 is about 268.1169386462.

The spelling of 19274040 in words is "nineteen million, two hundred seventy-four thousand, forty".