227272640 has 112 divisors (see below), whose sum is σ = 622547904. Its totient is φ = 77414400.

The previous prime is 227272631. The next prime is 227272657. The reversal of 227272640 is 46272722.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 227272597 and 227272606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539630 + ... + 540050.

Almost surely, 2^227272640 is an apocalyptic number.

227272640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 227272640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311273952).

227272640 is an abundant number, since it is smaller than the sum of its proper divisors (395275264).

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

227272640 is a wasteful number, since it uses less digits than its factorization.

227272640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 227272640 is about 15075.5643343790. The cubic root of 227272640 is about 610.2611441217.

The spelling of 227272640 in words is "two hundred twenty-seven million, two hundred seventy-two thousand, six hundred forty".