19212938 has 16 divisors (see below), whose sum is σ = 29318976. Its totient is φ = 9441600.

The previous prime is 19212931. The next prime is 19212961. The reversal of 19212938 is 83921291.

It is a junction number, because it is equal to n+sod(n) for n = 19212898 and 19212907.

It is not an unprimeable number, because it can be changed into a prime (19212931) 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, 33845 + ... + 34407.

It is an arithmetic number, because the mean of its divisors is an integer number (1832436).

Almost surely, 2^19212938 is an apocalyptic number.

19212938 is a deficient number, since it is larger than the sum of its proper divisors (10106038).

19212938 is a wasteful number, since it uses less digits than its factorization.

19212938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its digits is 7776, while the sum is 35.

The square root of 19212938 is about 4383.2565519257. The cubic root of 19212938 is about 267.8333132189.

The spelling of 19212938 in words is "nineteen million, two hundred twelve thousand, nine hundred thirty-eight".