27896840 has 32 divisors (see below), whose sum is σ = 64935000. Its totient is φ = 10773504.

The previous prime is 27896839. The next prime is 27896863. The reversal of 27896840 is 4869872.

It can be written as a sum of positive squares in 4 ways, for example, as 22486564 + 5410276 = 4742^2 + 2326^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27896791 and 27896800.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10865 + ... + 13184.

Almost surely, 2^27896840 is an apocalyptic number.

27896840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27896840 is an abundant number, since it is smaller than the sum of its proper divisors (37038160).

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

27896840 is a wasteful number, since it uses less digits than its factorization.

27896840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24089 (or 24085 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 27896840 is about 5281.7459234613. The cubic root of 27896840 is about 303.2855162184.

The spelling of 27896840 in words is "twenty-seven million, eight hundred ninety-six thousand, eight hundred forty".