226782720 has 320 divisors, whose sum is σ = 857355840. Its totient is φ = 56623104.

The previous prime is 226782713. The next prime is 226782781. The reversal of 226782720 is 27287622.

It is a tau number, because it is divible by the number of its divisors (320).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1174944 + ... + 1175136.

It is an arithmetic number, because the mean of its divisors is an integer number (2679237).

Almost surely, 2^226782720 is an apocalyptic number.

226782720 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 226782720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428677920).

226782720 is an abundant number, since it is smaller than the sum of its proper divisors (630573120).

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

226782720 is a wasteful number, since it uses less digits than its factorization.

226782720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 226782720 is about 15059.3067569527. The cubic root of 226782720 is about 609.8223257511.

The spelling of 226782720 in words is "two hundred twenty-six million, seven hundred eighty-two thousand, seven hundred twenty".