19440212 has 24 divisors (see below), whose sum is σ = 37726752. Its totient is φ = 8690400.

The previous prime is 19440203. The next prime is 19440217. The reversal of 19440212 is 21204491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19440217) 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, 938 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (1571948).

Almost surely, 2^19440212 is an apocalyptic number.

It is an amenable number.

19440212 is a deficient number, since it is larger than the sum of its proper divisors (18286540).

19440212 is a wasteful number, since it uses less digits than its factorization.

19440212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7319 (or 7317 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 19440212 is about 4409.1055782324. The cubic root of 19440212 is about 268.8852622156.

The spelling of 19440212 in words is "nineteen million, four hundred forty thousand, two hundred twelve".