27145530 has 48 divisors (see below), whose sum is σ = 73198944. Its totient is φ = 7238160.

The previous prime is 27145523. The next prime is 27145541. The reversal of 27145530 is 3554172.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 27145494 and 27145503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3156 + ... + 8015.

It is an arithmetic number, because the mean of its divisors is an integer number (1524978).

Almost surely, 2^27145530 is an apocalyptic number.

27145530 is an abundant number, since it is smaller than the sum of its proper divisors (46053414).

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

27145530 is a wasteful number, since it uses less digits than its factorization.

27145530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11193 (or 11181 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 27145530 is about 5210.1372342770. The cubic root of 27145530 is about 300.5380344861.

The spelling of 27145530 in words is "twenty-seven million, one hundred forty-five thousand, five hundred thirty".