19976842 has 8 divisors (see below), whose sum is σ = 29988000. Its totient is φ = 9980844.

The previous prime is 19976821. The next prime is 19976849. The reversal of 19976842 is 24867991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19976792 and 19976801.

It is not an unprimeable number, because it can be changed into a prime (19976849) 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, 459 + ... + 6337.

It is an arithmetic number, because the mean of its divisors is an integer number (3748500).

Almost surely, 2^19976842 is an apocalyptic number.

19976842 is a deficient number, since it is larger than the sum of its proper divisors (10011158).

19976842 is a wasteful number, since it uses less digits than its factorization.

19976842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580.

The product of its digits is 217728, while the sum is 46.

The square root of 19976842 is about 4469.5460619620. The cubic root of 19976842 is about 271.3369537248.

The spelling of 19976842 in words is "nineteen million, nine hundred seventy-six thousand, eight hundred forty-two".