27870432 has 24 divisors (see below), whose sum is σ = 73160136. Its totient is φ = 9290112.

The previous prime is 27870431. The next prime is 27870443. The reversal of 27870432 is 23407872.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 27870393 and 27870402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27870431) 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, 145063 + ... + 145254.

It is an arithmetic number, because the mean of its divisors is an integer number (3048339).

Almost surely, 2^27870432 is an apocalyptic number.

It is an amenable number.

27870432 is an abundant number, since it is smaller than the sum of its proper divisors (45289704).

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

27870432 is a wasteful number, since it uses less digits than its factorization.

27870432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290330 (or 290322 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 27870432 is about 5279.2454006231. The cubic root of 27870432 is about 303.1897862303.

The spelling of 27870432 in words is "twenty-seven million, eight hundred seventy thousand, four hundred thirty-two".