19290996 has 18 divisors (see below), whose sum is σ = 48763442. Its totient is φ = 6430320.

The previous prime is 19290991. The next prime is 19291007. The reversal of 19290996 is 69909291.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15920100 + 3370896 = 3990^2 + 1836^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19290991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 267895 + ... + 267966.

Almost surely, 2^19290996 is an apocalyptic number.

It is an amenable number.

19290996 is an abundant number, since it is smaller than the sum of its proper divisors (29472446).

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

19290996 is a wasteful number, since it uses less digits than its factorization.

19290996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535871 (or 535866 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 19290996 is about 4392.1516367266. The cubic root of 19290996 is about 268.1955393326.

The spelling of 19290996 in words is "nineteen million, two hundred ninety thousand, nine hundred ninety-six".