27143490 has 64 divisors (see below), whose sum is σ = 71995392. Its totient is φ = 6494400.

The previous prime is 27143489. The next prime is 27143497. The reversal of 27143490 is 9434172.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (27143497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26895 + ... + 27885.

It is an arithmetic number, because the mean of its divisors is an integer number (1124928).

Almost surely, 2^27143490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27143490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35997696).

27143490 is an abundant number, since it is smaller than the sum of its proper divisors (44851902).

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

27143490 is a wasteful number, since it uses less digits than its factorization.

27143490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 27143490 is about 5209.9414584043. The cubic root of 27143490 is about 300.5305057702.

The spelling of 27143490 in words is "twenty-seven million, one hundred forty-three thousand, four hundred ninety".