227771540 has 12 divisors (see below), whose sum is σ = 478320276. Its totient is φ = 91108608.

The previous prime is 227771527. The next prime is 227771543. The reversal of 227771540 is 45177722.

It can be written as a sum of positive squares in 2 ways, for example, as 171191056 + 56580484 = 13084^2 + 7522^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 227771540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227771543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5694269 + ... + 5694308.

It is an arithmetic number, because the mean of its divisors is an integer number (39860023).

Almost surely, 2^227771540 is an apocalyptic number.

227771540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227771540 is an abundant number, since it is smaller than the sum of its proper divisors (250548736).

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

227771540 is a wasteful number, since it uses less digits than its factorization.

227771540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11388586 (or 11388584 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 227771540 is about 15092.1019079517. The cubic root of 227771540 is about 610.7073582327.

The spelling of 227771540 in words is "two hundred twenty-seven million, seven hundred seventy-one thousand, five hundred forty".