91226000 has 40 divisors (see below), whose sum is σ = 220589304. Its totient is φ = 36489600.

The previous prime is 91225999. The next prime is 91226033. The reversal of 91226000 is 62219.

It can be written as a sum of positive squares in 4 ways, for example, as 22733824 + 68492176 = 4768^2 + 8276^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20807 + ... + 24806.

Almost surely, 2^91226000 is an apocalyptic number.

It is an amenable number.

91226000 is an abundant number, since it is smaller than the sum of its proper divisors (129363304).

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

91226000 is a wasteful number, since it uses less digits than its factorization.

91226000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45636 (or 45620 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 91226000 is about 9551.2302872457. The cubic root of 91226000 is about 450.1661937579.

Adding to 91226000 its reverse (62219), we get a palindrome (91288219).

The spelling of 91226000 in words is "ninety-one million, two hundred twenty-six thousand".