19617442 has 16 divisors (see below), whose sum is σ = 32139072. Its totient is φ = 8925840.

The previous prime is 19617431. The next prime is 19617449. The reversal of 19617442 is 24471691.

It is a junction number, because it is equal to n+sod(n) for n = 19617398 and 19617407.

It is not an unprimeable number, because it can be changed into a prime (19617449) 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, 3468 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (2008692).

Almost surely, 2^19617442 is an apocalyptic number.

19617442 is a deficient number, since it is larger than the sum of its proper divisors (12521630).

19617442 is a wasteful number, since it uses less digits than its factorization.

19617442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10713.

The product of its digits is 12096, while the sum is 34.

The square root of 19617442 is about 4429.1581592894. The cubic root of 19617442 is about 269.6999043463.

The spelling of 19617442 in words is "nineteen million, six hundred seventeen thousand, four hundred forty-two".