27401540 has 12 divisors (see below), whose sum is σ = 57543276. Its totient is φ = 10960608.

The previous prime is 27401531. The next prime is 27401557. The reversal of 27401540 is 4510472.

It can be written as a sum of positive squares in 2 ways, for example, as 6461764 + 20939776 = 2542^2 + 4576^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685019 + ... + 685058.

It is an arithmetic number, because the mean of its divisors is an integer number (4795273).

Almost surely, 2^27401540 is an apocalyptic number.

27401540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27401540 is an abundant number, since it is smaller than the sum of its proper divisors (30141736).

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

27401540 is a wasteful number, since it uses less digits than its factorization.

27401540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370086 (or 1370084 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 27401540 is about 5234.6480301927. The cubic root of 27401540 is about 301.4798731003.

The spelling of 27401540 in words is "twenty-seven million, four hundred one thousand, five hundred forty".