19940346 has 12 divisors (see below), whose sum is σ = 43204122. Its totient is φ = 6646776.

The previous prime is 19940341. The next prime is 19940357. The reversal of 19940346 is 64304991.

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 8346321 = 3405^2 + 2889^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19940346.

It is not an unprimeable number, because it can be changed into a prime (19940341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553881 + ... + 553916.

Almost surely, 2^19940346 is an apocalyptic number.

19940346 is an abundant number, since it is smaller than the sum of its proper divisors (23263776).

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

19940346 is a wasteful number, since it uses less digits than its factorization.

19940346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107805 (or 1107802 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 19940346 is about 4465.4614543180. The cubic root of 19940346 is about 271.1716164463.

The spelling of 19940346 in words is "nineteen million, nine hundred forty thousand, three hundred forty-six".