226758640 has 20 divisors (see below), whose sum is σ = 527214024. Its totient is φ = 90703424.

The previous prime is 226758613. The next prime is 226758641. The reversal of 226758640 is 46857622.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 226758593 and 226758602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226758641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1417162 + ... + 1417321.

Almost surely, 2^226758640 is an apocalyptic number.

226758640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226758640 is an abundant number, since it is smaller than the sum of its proper divisors (300455384).

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

226758640 is a wasteful number, since it uses less digits than its factorization.

226758640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834496 (or 2834490 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 226758640 is about 15058.5072301341. The cubic root of 226758640 is about 609.8007411533.

The spelling of 226758640 in words is "two hundred twenty-six million, seven hundred fifty-eight thousand, six hundred forty".