226561860 has 120 divisors (see below), whose sum is σ = 812306880. Its totient is φ = 51782976.

The previous prime is 226561849. The next prime is 226561877. The reversal of 226561860 is 68165622.

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

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 39 ways as a sum of consecutive naturals, for example, 1351 + ... + 21329.

It is an arithmetic number, because the mean of its divisors is an integer number (6769224).

Almost surely, 2^226561860 is an apocalyptic number.

226561860 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 226561860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406153440).

226561860 is an abundant number, since it is smaller than the sum of its proper divisors (585745020).

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

226561860 is a wasteful number, since it uses less digits than its factorization.

226561860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20007 (or 19996 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 226561860 is about 15051.9719638325. The cubic root of 226561860 is about 609.6242961052.

The spelling of 226561860 in words is "two hundred twenty-six million, five hundred sixty-one thousand, eight hundred sixty".