271228440 has 64 divisors (see below), whose sum is σ = 929928960. Its totient is φ = 61994880.

The previous prime is 271228423. The next prime is 271228457. The reversal of 271228440 is 44822172.

271228440 = 218² + 219² + ... + 937².

It is an interprime number because it is at equal distance from previous prime (271228423) and next prime (271228457).

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

It is a junction number, because it is equal to n+sod(n) for n = 271228398 and 271228407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160606 + ... + 162285.

It is an arithmetic number, because the mean of its divisors is an integer number (14530140).

Almost surely, 2^271228440 is an apocalyptic number.

271228440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271228440 is an abundant number, since it is smaller than the sum of its proper divisors (658700520).

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

271228440 is a wasteful number, since it uses less digits than its factorization.

271228440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322912 (or 322908 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 271228440 is about 16469.0145424673. The cubic root of 271228440 is about 647.3091440692.

The spelling of 271228440 in words is "two hundred seventy-one million, two hundred twenty-eight thousand, four hundred forty".