19540472 has 16 divisors (see below), whose sum is σ = 41872560. Its totient is φ = 8374464.

The previous prime is 19540471. The next prime is 19540487. The reversal of 19540472 is 27404591.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19540471) 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, 174413 + ... + 174524.

It is an arithmetic number, because the mean of its divisors is an integer number (2617035).

Almost surely, 2^19540472 is an apocalyptic number.

It is an amenable number.

19540472 is an abundant number, since it is smaller than the sum of its proper divisors (22332088).

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

19540472 is a wasteful number, since it uses less digits than its factorization.

19540472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348950 (or 348946 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 19540472 is about 4420.4606094840. The cubic root of 19540472 is about 269.3467150711.

The spelling of 19540472 in words is "nineteen million, five hundred forty thousand, four hundred seventy-two".