19472742 has 24 divisors (see below), whose sum is σ = 42381144. Its totient is φ = 6461664.

The previous prime is 19472737. The next prime is 19472749. The reversal of 19472742 is 24727491.

It is a junction number, because it is equal to n+sod(n) for n = 19472697 and 19472706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19472749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1873 + ... + 6515.

It is an arithmetic number, because the mean of its divisors is an integer number (1765881).

Almost surely, 2^19472742 is an apocalyptic number.

19472742 is an abundant number, since it is smaller than the sum of its proper divisors (22908402).

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

19472742 is a wasteful number, since it uses less digits than its factorization.

19472742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884 (or 4881 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 19472742 is about 4412.7929931054. The cubic root of 19472742 is about 269.0351570712.

The spelling of 19472742 in words is "nineteen million, four hundred seventy-two thousand, seven hundred forty-two".