19540804 has 6 divisors (see below), whose sum is σ = 34196414. Its totient is φ = 9770400.

The previous prime is 19540783. The next prime is 19540811. The reversal of 19540804 is 40804591.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16974400 + 2566404 = 4120^2 + 1602^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2442597 + ... + 2442604.

Almost surely, 2^19540804 is an apocalyptic number.

It is an amenable number.

19540804 is a deficient number, since it is larger than the sum of its proper divisors (14655610).

19540804 is a wasteful number, since it uses less digits than its factorization.

19540804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885205 (or 4885203 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 19540804 is about 4420.4981619722. The cubic root of 19540804 is about 269.3482404966.

The spelling of 19540804 in words is "nineteen million, five hundred forty thousand, eight hundred four".