27971450 has 48 divisors (see below), whose sum is σ = 58496256. Its totient is φ = 9873600.

The previous prime is 27971441. The next prime is 27971453. The reversal of 27971450 is 5417972.

It is a self number, because there is not a number n which added to its sum of digits gives 27971450.

It is not an unprimeable number, because it can be changed into a prime (27971453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14015 + ... + 15885.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 2^27971450 is an apocalyptic number.

27971450 is an abundant number, since it is smaller than the sum of its proper divisors (30524806).

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

27971450 is a wasteful number, since it uses less digits than its factorization.

27971450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 27971450 is about 5288.8042126742. The cubic root of 27971450 is about 303.5556542141. Note that the first 3 decimals are identical.

The spelling of 27971450 in words is "twenty-seven million, nine hundred seventy-one thousand, four hundred fifty".