27156540 has 48 divisors (see below), whose sum is σ = 76285440. Its totient is φ = 7218240.

The previous prime is 27156539. The next prime is 27156541. The reversal of 27156540 is 4565172.

It is an interprime number because it is at equal distance from previous prime (27156539) and next prime (27156541).

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

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 27156498 and 27156507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27156541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25825 + ... + 26855.

It is an arithmetic number, because the mean of its divisors is an integer number (1589280).

Almost surely, 2^27156540 is an apocalyptic number.

27156540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27156540 is an abundant number, since it is smaller than the sum of its proper divisors (49128900).

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

27156540 is a wasteful number, since it uses less digits than its factorization.

27156540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 27156540 is about 5211.1937212121. The cubic root of 27156540 is about 300.5786608987.

The spelling of 27156540 in words is "twenty-seven million, one hundred fifty-six thousand, five hundred forty".