27819996 has 12 divisors (see below), whose sum is σ = 64913352. Its totient is φ = 9273328.

The previous prime is 27819983. The next prime is 27819997. The reversal of 27819996 is 69991872.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27819997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159155 + ... + 1159178.

It is an arithmetic number, because the mean of its divisors is an integer number (5409446).

Almost surely, 2^27819996 is an apocalyptic number.

It is an amenable number.

27819996 is an abundant number, since it is smaller than the sum of its proper divisors (37093356).

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

27819996 is a wasteful number, since it uses less digits than its factorization.

27819996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318340 (or 2318338 counting only the distinct ones).

The product of its digits is 489888, while the sum is 51.

The square root of 27819996 is about 5274.4664185110. The cubic root of 27819996 is about 303.0067856751.

The spelling of 27819996 in words is "twenty-seven million, eight hundred nineteen thousand, nine hundred ninety-six".