187227540 has 36 divisors (see below), whose sum is σ = 567924084. Its totient is φ = 49927296.

The previous prime is 187227527. The next prime is 187227571. The reversal of 187227540 is 45722781.

187227540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 106874244 + 80353296 = 10338^2 + 8964^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 187227495 and 187227504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 519897 + ... + 520256.

It is an arithmetic number, because the mean of its divisors is an integer number (15775669).

Almost surely, 2^187227540 is an apocalyptic number.

187227540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187227540 is an abundant number, since it is smaller than the sum of its proper divisors (380696544).

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

187227540 is a wasteful number, since it uses less digits than its factorization.

187227540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040168 (or 1040163 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 187227540 is about 13683.1114882544. Note that the first 3 decimals coincide. The cubic root of 187227540 is about 572.0797523565.

It can be divided in two parts, 18722 and 7540, that added together give a palindrome (26262).

The spelling of 187227540 in words is "one hundred eighty-seven million, two hundred twenty-seven thousand, five hundred forty".